Which of the following is a fragment? The duck quacked
pigs wallow in the mud
the horse ate the apple
the fluffy yellow chicks

i think it would be pigs wallow in the mud or the horse ate apples

Explanation:

unlike the other two which describe characteristic's they only desccribe something that they do

Besides health benefits, when adults perform regular exercise, they can get reduced stress, increased self-esteem, improved mood, and improved sleep quality. As one can see, regular exercise is an important component for having a healthy body. Neglecting on it can hamper all of these benefits and make you unhealthy.