Concept:Swarming is a form of collective movement used by some social organisms to reduce population pressure and find new habitats.
Explanation:When a termite colony becomes overcrowded, it produces winged reproductive individuals called alates.
These alates leave the nest in a large group, known as a swarm, and disperse to establish new colonies.
This behavioural adaptation reduces competition for space and resources within the original colony.
Other animals in the options, such as the agama lizard, tilapia, and rats, do not typically use swarming to overcome overcrowding.
Termites are therefore the organisms that adopt swarming for this purpose.
Answer:D. Termites