4. How is the strength of the muscle contraction determined?

The ability of muscle to generate force is determined in part by the speed at which a muscle is contracting. For concentric muscle contractions, or when a muscle shortens, as the speed of a contraction increases the force-producing capability of the muscle decreases in a hyperbolic fashion.

your answer should be c, it seems to be the only one that makes sense. mark me branliest : )