In what type of relationship do fig trees and fig wasps engage

Symbiotic Relationship

Both fig trees and fig wasps are important for each others survival.

Explanation: The fig provides a joke for the wasps and the wasps provide pollen that the fig needs for  the fruit to ripen.

It basically begins when a female fig wasp enters the fig and lays eggs ,they pollinate the fig with pollen that they had collected in their pouches after mating ,when the wasp enters the fig its wings and parts of antennae may get broken because of the small opening in the fruit ,the wasp completes it's task and never leave the fruit after.

the answer for this question would be d. glaciers