Hypertrophy of skeletal muscles from weight lifting is caused by an increase in the

A) number of muscle fibers.
B) size of muscle fibers.
C) number of striations.
D) number of nuclei within the muscle fibers.
E) number of muscle cells.

Hypertrophy

The increase in size of an organ or tissue through the enlargement of its cells.

Skeletal Muscles

Muscles attached to bones by tendons that are responsible for the movement of the skeleton and thus the body.

Muscle Fibers

The elongated cells that makeup skeletal muscles, responsible for contracting to produce movement.