LSAT

Category - Logical Reasoning

Doctor: “The consumption of large amounts of trans fats increases the risk of developing serious health problems such as heart disease. Because trans fats are often not identified on food nutrition labels, those labels are not useful for making informed decisions on personal health.”

Which of the following is an assumption required by the doctor’s argument?
  1. Nutrition labels do not contain any other information helpful in determining a food's nutritious value.
  2. Trans fats are the most dangerous ingredients in a food
  3. Heart disease is the most serious health problem a person could face.
  4. Lowering the levels of trans fats decreases the risk of developing heart disease.
  5. There are no reliable ways for determining the levels of trans fats in a food.
Explanation
Answer: A - The doctor’s argument assumes that nutrition labels do not contain any other information helpful in determining a food’s nutrition value. The doctor claims that because trans fats are not labeled, the labels are useless for making informed health decisions. For this to be true, there could not be any other useful information on the labels, or the labels would have some merit for making health decisions.
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