Answer:
Option (A).
Step-by-step explanation:
Muscular fitness may be defined as the muscles that has the ability that can lift the heavier objects. The muscle fitness of a body can be improved by doing exercises.
The frequency of muscle fitness can be increased by providing at least 72 hours recover time between the exercise for same muscle group. The muscular fitness increase the time of exhaustion of muscles.
Thus, the correct answer is option (A).