Which of these is a thesis statement?
Choose one of the following.

For optimal performance, choose the shoe that best fits the type of exercise you are completing.

Exercise increases the blood flow and raises oxygen levels in the body, lowering the risk of heart disease.

The structure and function of the brain is improved by the proteins and chemicals released by the body during exercise.

Endurance, strength, balance, and flexibility are four types of exercise that can improve your health.