Question

the overriding problem with both theories of muscle growth, hypertrophy and hyperplasia, is that _______.
a. neither can be accepted as correct because muscles growth is difficult to study in humans
b. neither one is theoretically possible
c. neither has been studied by reputable scientists
d. neither has been accepted by member of the fitness community

please select the best answer from the choices provided.

○ a
○ b
○ c
○ d

Explanation:

To solve this, we analyze each option:

• Option B: Hypertrophy (muscle cell enlargement) and hyperplasia (muscle cell number increase) are theoretically possible, so B is wrong.
• Option C: Both theories have been studied by reputable scientists, so C is incorrect.
• Option D: The fitness community does accept concepts related to hypertrophy (e.g., muscle growth from exercise), so D is wrong.
• Option A: Studying muscle growth in humans is difficult (e.g., ethical/technical challenges in directly observing cell - level changes), making it hard to fully validate either theory, so A is correct.

Answer:

A. neither can be accepted as correct because muscles growth is difficult to study in humans