Which of the following is a normal response when assessing the cremasteric reflex in males?

The appropriate response when assessing the cremasteric reflex in males is immediate contraction of the cremaster muscle. This reflex is elicited by gently stroking the skin on the inner thigh, which stimulates the sensory fibers associated with the ilioinguinal nerve. In response to this stimulus, the cremaster muscle, which surrounds the spermatic cord and testicle, contracts, drawing the testicle closer to the body. This reflex serves as a protective mechanism to regulate the temperature of the testes and protect them from injury.

The other options provided do not accurately reflect the physiological response associated with the cremasteric reflex. Immediate contraction of the rectus abdominis does not occur as part of this reflex pathway. Relaxation of the cremaster muscle or no response would indicate an absent or impaired reflex, which is not the normal reaction expected during a proper assessment.