Achild’s often are influenced by the belief systems of his or her parents.
a. ideologies
b. bilingualism
c. territoriality
d. cultural diffusion

The correct answer is - a. ideologies.

The ideologies of a child are mostly influenced and set from the home environment, by its parents. The child learns and is influenced by what it sees and feels at home, and with the constant exposure to a certain ideology that is common in the household, the child automatically takes it as something that is right, and it is led by that ideology.