Module 5: Strengthen and Weaken

Concept Summary

Finding evidence that supports or undermines arguments

Question 1 of 11

Critical Reasoning Question

Strengthen/Weaken

A recent study found that people who drink green tea daily have a 20% lower risk of heart disease than those who don't drink green tea. The researchers concluded that drinking green tea prevents heart disease.

Which of the following, if true, would most WEAKEN the researchers' conclusion?

A.Green tea contains antioxidants that are beneficial for heart health.

B.People who drink green tea daily also tend to exercise more and eat healthier diets.

C.The study included 10,000 participants over a 10-year period.

D.Green tea consumption has increased significantly in recent years.

E.Some participants in the study drank both green tea and black tea.

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