What is the difference between moderate and vigorous activity? Use in your own words.

Vigorous activity requires more effort than moderate activity.

Explanation: Moderate activity, as its name indicates, is one where only a moderate effort is necessary for its realization. That is to say, the effort does not have to be very large but not low intensity either. In the case of vigorous activity, it requires greater strength.

answer (c) by causing social withdrawal;