The correct option is A General growth refers to different types of developmental process in the body but sexual maturation is specific changes reflected at puberty.
Growth is a positive change in the size, often over a period of time which includes physical growth in height, weight, change in shape and size of the body.
Sexual maturity is the age or stage when an organism can reproduce. It is brought about by a maturing of the reproductive organs and the production of gametes. It is also accompanied by a growth spurt or other physical changes which distinguish the immature organism from its adult form. In humans, this process of sexually maturing is termed puberty.
Thus, the correct answer is option (A).