Question

consider this claim:

people should do yoga if they want to help prevent some of the common ailments associated with aging.
which is the strongest evidence to support the claim?

most yoga instructors agree that people of any age can safely practice yoga.

in a survey of senior citizens who had recently begun attending yoga classes, a majority said that they enjoyed and looked forward to the classes.

research indicates that yoga can improve peoples flexibility, which helps to prevent arthritis and other common joint problems.

Explanation:

To support the claim that yoga helps prevent aging - related ailments, we need evidence linking yoga to preventing such ailments. The first option is about safety, the second about enjoyment, but the third option (Research indicates that yoga can improve people's flexibility, which helps to prevent arthritis and other common joint problems) directly connects yoga to preventing joint problems (common with aging) via improved flexibility, making it the strongest evidence.

Answer:

Research indicates that yoga can improve people's flexibility, which helps to prevent arthritis and other common joint problems.