Male Australian bowerbirds build and decorate elaborate structures, called bowers, out of grasses and other vegetation. If we want to understand how this behavior promotes a male bowerbird's ability to survive and reproduce, we want to understand its:

a. causation.
b. development.
c. adaptive function.
d. evolutionary history.
e. genetic basis.

Option C, adaptive function

Explanation:

A Male Australian bowerbirds builds a distinctive nest which is attractive enough to attract a mating partner. Here the bowerbirds is adapting to the environment without affecting others but enhancing its own chances of survival and reproduction. So here we can say that male bowerbirds uses its brain and cognitive systems to build bowers thereby giving rise to behavioural competition thereby establishing behaviorally conditioned reproductive isolation

Hence, option C is correct

c. live where it’s cold and icy

what? are the statements?