In GMAT Critical Reasoning, "Strengthen" questions ask you to find an answer choice that supports the argument's conclusion. To do this:
1. Identify the Conclusion – What is the main claim?
2. Find the Premises – What evidence is given?
3. Look for Gaps – What assumptions connect the premise to the conclusion?
4. Choose the Answer That Strengthens the Link – The correct answer should reinforce the argument’s logic, not just restate a premise.
Example:
Argument: A new study finds that people who drink green tea daily have a lower risk of heart disease. Therefore, drinking green tea prevents heart disease.
Which answer strengthens the argument?
A) People who drink green tea also tend to exercise regularly.
B) A compound in green tea has been shown to reduce cholesterol, a risk factor for heart disease.
C) The study was conducted on a large group of people over 10 years.
D) Some people who drink green tea still develop heart disease.
E) Many people who drink green tea also consume a healthy diet.
Correct Answer: B It provides a causal link between green tea and reduced heart disease risk.