Q: Cycling, shoveling snow and cross-country skiing are examples of what kind of heart-strengthening activity?


Read this paragraph and choose the correct option from the provided answers:

When done regularly, aerobic activities, such as cycling, make the heart stronger. Other aerobic activities include mowing lawn, shoveling snow and cross country skiing.

 Choices:

- metabolism

- anaerobic

- exercise

- aerobic


A:
aerobic