Final answer:
Stretching slowly stimulates muscle spindles to avoid muscle spasms. Hence, the statement is a) true.
Step-by-step explanation:
Muscle spasms can be avoided by stretching slowly, which stimulates the primary sensory endings called muscle spindles. These stretch receptors detect the amount of stretch or lengthening of muscles.
When the muscles are stretched too quickly, the muscle spindles send signals to the spinal cord, which then causes the muscles to contract and produce a spasm. By stretching slowly, the muscle spindles are not activated, and the risk of muscle spasms is reduced.