In muscular endurance training, performing at least this many repetitions per set is recommended.

• A. 3 Repetitions
• B. 6 Repetitions
• C. 9 Repetitions
• D. 12 Repetitions

Answer: (C)

Muscular endurance training is about how long a muscle can keep performing contractions before fatigue sets in. To train that, you use lighter loads and perform more repetitions per set, which conditions the muscle to sustain effort and improve fatigue resistance over time. The idea is to place the muscle under a higher-repetition, time-under-tension stimulus rather than a heavy, low-rep stress that targets maximal strength. Among the options, the one that reflects this higher-repetition approach provides the stimulus most aligned with endurance development—enough repetitions to stress maintaining performance without the heavy loads that shift focus toward strength or power. In short, endurance thrives on a higher-repetition, lighter-load pattern, so the answer is the option that represents that higher-rep range.