The amount of refrigeration and transport required to bring a food from farm to table substantially affects the sum total...

Phase 1: Owning the Dataset

First, Create an Argument Analysis Table

Second, Identify Argument Structure

• Main conclusion: Consumers should choose locally grown foods over organically grown foods to reduce carbon emissions
• Supporting evidence:
  • Transport and refrigeration substantially affect carbon emissions
  • Organic foods are often transported over great distances
• Key assumption: The carbon savings from reduced transport distance (local foods) outweigh any other carbon-related differences between local and organic foods
• Logical flow: Transport distance matters → Organic foods travel far → Therefore choose local

Phase 2: Question Analysis & Prethinking

First, Understand What Each Part Asks

We need to select:

• Part 1 (Strengthens): A statement that makes the conclusion more likely to be true
• Part 2 (Weakens): A statement that makes the conclusion less likely to be true

These parts work together to test our understanding of what would support or undermine the argument's reasoning.

Second, Generate Prethinking Based on Question Type

For the Strengthener, we need something that would:

• Reinforce that organic foods require more transport than local foods
• Show that transport distance is indeed a major factor in carbon emissions
• Eliminate alternative ways organic foods could be low-carbon despite transport

For the Weakener, we need something that would:

• Show that organic foods might have lower total carbon emissions despite transport
• Suggest local foods might also have high transport emissions
• Identify other factors that outweigh transport considerations

Third, Develop Specific Prethinking for Each Part

For Strengthens:

• Example: "Organic foods available in local stores are almost always shipped from distant organic farms"
• Example: "Transport accounts for the majority of carbon emissions in food production"

For Weakens:

• Example: "Organic farming methods produce significantly less carbon during the growing process"
• Example: "Many local foods are grown using carbon-intensive methods"

Phase 3: Answer Choice Evaluation

Evaluating Each Choice

Choice 1: "On average, food travels 1,300 to 2,000 miles from farm to table."

• This is a general statement about all food, not specifically comparing local vs. organic
• Doesn't strengthen or weaken the specific comparison being made
• Could apply equally to both types

Choice 2: "The total of carbon emissions associated with organic food production prior to the food being transported from farm to table is much less than that associated with non-organic food production."

• This directly challenges the argument by introducing production emissions
• Suggests organic foods might have lower total emissions even with more transport
• Strong weakener - shows transport isn't the only factor to consider

Choice 3: "Food grown on farms that do not use organic production methods is often transported to markets far away."

• This suggests non-organic foods (which could include local foods) also travel far
• Partially weakens by suggesting local foods might not actually have transport advantage
• Moderate weakener

Choice 4: "Very little of the organically produced food that can be found locally is locally or regionally grown."

• This strongly reinforces that organic = distant transport
• Eliminates the possibility of choosing foods that are both organic AND local
• Strong strengthener - supports the premise that organic foods require long transport

Choice 5: "Some local food growers use harmful chemicals as fertilizers and pesticides when growing crops."

• This is about chemical use, not carbon emissions
• Doesn't affect the carbon emission argument at all
• Neither strengthens nor weakens

The Correct Answers

For Strengthens: Choice 4 - "Very little of the organically produced food that can be found locally is locally or regionally grown."

• This directly supports the argument's premise that choosing organic means choosing distant foods
• It eliminates the "best of both worlds" option, forcing the tradeoff the argument assumes

For Weakens: Choice 2 - "The total of carbon emissions associated with organic food production prior to the food being transported from farm to table is much less than that associated with non-organic food production."

• This directly challenges the argument's assumption that transport is the decisive factor
• It shows organic foods might have lower total emissions despite longer transport

Common Traps to Highlight

Choice 3 seems like it could weaken, but it's less direct than Choice 2:

• It only says non-organic foods are "often" transported far, not always
• It doesn't guarantee that local foods specifically have this problem
• Choice 2 provides a clearer, more quantifiable challenge to the argument

Choice 1 might seem relevant, but it's too general:

• It doesn't distinguish between local and organic foods
• The argument already assumes transport matters; this doesn't add new information
• We need choices that specifically address the local vs. organic comparison