Parents should cultivate in their children the habit of helping others.

Answer: Option D

Propagate : breed specimens of (a plant or animal) by natural processes from the parent stock.
Sprout : (of a plant) put out shoots.
Create : bring (something) into existence.
Foster : encourage the development of (something, especially something desirable).
Cultivate : try to improve or develop (one's mind).

Synonym of Cultivate is Foster