The correct option is A Sexual reproduction
When two parents (opposite sex) participate in the reproductive process and also involve the fusion of male and female gametes, it is called sexual reproduction. Because of the fusion of male and female gametes, sexual reproduction results in offspring not identical to the parents or amongst themselves.
When a single parent produces offspring with or without the involvement of gamete formation, the reproduction is asexual. When plant parts are used to form offsprings such method is called vegetative propagation.
In some organisms like rotifers, honeybees and even some lizards and birds (turkey), the female gamete undergoes development to form new organisms without fertilization. This phenomenon is called parthenogenesis.