The overriding problem with both theories of muscle growth, hypertrophy and hyperplasia, is that

Neither can be accepted as correct because muscles growth is difficult to study in humans

Neither one is theoretically possible

Neither has been studied by reputable scientists

Neither has been accepted by member of the fitness community

Correct answer choice is :

Although hypertrophy and hyperplasia are two different methods, they usually happen together, such as in the case of the hormonally-induced reproduction and expansion of the cells of the uterus during pregnancy. Hyperplasia is distinct from hypertrophy in that the adaptive cell development in hypertrophy is an expansion in the size of cells, whereas hyperplasia includes an improvement in the number of cells.

what are the options