1) Personality development is one of the primary aspects of a child's overall growth. (2) Personality refers to the personal traits of an individual, his or her behavior, thoughts, and ability to communicate with other people. (3) The personality of an individual starts growing when he or she is a child and it slowly acquires shape as the child becomes an adult. (4) This is the reason why it is important for educational institutions to put emphasis on the growth of a child's personality. (5) Sports and other after-school activities as well as active learning methods help in developing an overall positive attitude and prepare the child for future challenges.

Which revision improves the clarity of sentence 3 above?
A.
The personality of an individual grows and develops during his or her adulthood.
B.
An individual's personality grows and develops from childhood to adulthood.
C.
The personality of an individual begins to grow and acquire shape when he or she is a child.
D.
An individual's personality starts developing and taking shape when the individual is a child.