In the context of the nature and importance of intimacy, when the need to belong is satisfied, the drive to form additional relationships is:
a) increased.
b) reduced.
c) developed.
d) lost.

The drive to form additional relationships is increased once the need to belong to one partner is satisfied.

Explanation:

Almost all the intimate relations have a phase of maturity and peak. Through the phase of maturity, the individuals involved in the relationship begin experiencing fulfilling satisfaction that lasts for a certain period.Once this satisfaction reaches the point of culmination, it starts becoming ineffective and hence, the need to belong to the someone else is automatically stimulated.

Sorry wish i could