Final answer:
Skeletal muscles are voluntary muscles and can be actively controlled, making option (c) Skeletal the correct answer.
Step-by-step explanation:
Skeletal muscles are called voluntary muscles because they can be controlled consciously by an individual's will. Therefore, the correct answer to the given question is (c) Skeletal. In contrast, involuntary muscles, such as cardiac muscles found only in the heart, operate without conscious control, maintaining functions like blood circulation and blood pressure. Smooth muscles differ from skeletal and cardiac muscles as they are located in the walls of hollow organs and are not under voluntary control. Smooth muscle sustains longer or sustained contractions, whereas skeletal muscles are responsible for short, intense bursts of movement.