The correct option is A A - Head B - Middle piece C - Tail
In male reproductive system, testes are the primary reproductive organ. They produce the male gamete i.e., sperm. The following diagram represents the structure of sperm. The part of sperm labelled as A is the head which contains the genetic material, DNA, B is the middle piece that contains mitochondria which produces energy for whiplash movement of tail. And the part labelled as C represents the tail of the sperm which helps in locomotion of the sperm so that it can reach the egg.