Try the aquatics exercises you learned in lesson 02.07 Aquatics. What was the most difficult part of completing the leg action of treading water or bicycling in the air? Why?

The correct answer would be - leg action of treading water

Explanation:

As we know that air is less thick or dense than water which makes treading water more difficult for leg action as it required more muscle action harder than air and has to work more.

In leg action of treading water requires more time and hard work than air so it is a more difficult aquatic exercise.

Thus, The correct answer would be - leg action of treading water