Answer:
A. Clearly, there are lots of ways you can exercise during any given day.
Step-by-step explanation:
The paragraph discusses various ways in which someone can incorporate exercise into their daily routine, such as walking or biking to work or school, taking the stairs, and using an exercise ball. The clincher sentence should summarize this idea and provide an overall message to the reader. Choice A is the best option as it provides a clear and concise statement that reflects the main idea of the paragraph.