medium · GMAT Verbal
Argument: A study found that individuals who consume at least two servings of blueberries per week perform better on cognitive memory tests than those who do not. Researchers concluded that the antioxidants in blueberries are responsible for enhancing neural pathways involved in memory.
Which of the following is an assumption required by the researchers' conclusion?
- The two groups contained the same proportion of subjects who took supplements known to improve cognitive function.
- Antioxidants are the only compounds in blueberries that could possibly affect brain health.
- Blueberries contain a higher concentration of antioxidants than any other fruit or vegetable.
- The memory-test difference is not entirely explained by pre-existing memory ability that also makes some people more likely to choose blueberries.
- Participants who ate blueberries were more likely to report enjoying outdoor activities unrelated to diet or memory.
Sign up free to see the explanation and track your rank →
More GMAT Verbal practice
- A gardener says: 'All roses in this garden require daily wat… — What is the role of the st
- What is the conclusion?
- Which of the following is the conclusion?
- What logical role do the first two statements play?
- What is the conclusion?
- What logical role does the first sentence play in the researcher's argument?
- Which statement is the conclusion?
- Which of the following, if true, most undermines the agency's claim?