Despite interspecific competition in nature, which mechanism might competing species have evolved for their survival?

Two closely related species competing for the same resources cannot coexist indefinitely. This principle is known as:

Competition for light, nutrients and space is most severe between

$A$ female fig wasp enters the syconium of a fig,pollinates the flowers and lays eggs in the ovaries of some of the flowers. The young larvae grow up,eat (and kill) some,but not all of the seeds and complete their life cycle.
The fig is completely dependent on fig wasps to pollinate its flowers and the fig wasp requires figs to complete its life cycle.
The interaction between figs and fig wasps has aspects of:
$I.$ mutualism
$II.$ host-parasite interaction
$III.$ competition
$IV.$ ammensalism
$V.$ protocooperation
Select the correct option.

An organism that depends on others can be described as a ..... parasite.

Which one of the following is categorised as a parasite in the true sense?