Verified Answer :

The answer is K-selected.

The population size of K-selected species is fairly constant
in time, unlike the population size of r-selected species. r-selected species
are usually bellow carrying capacity and the population size is density
independent. On the contrary, K-selected species are usually near or at
carrying capacity
and the population size is density dependent. It can be concluded that sperm whales have K-selected populations, since they 
maintain their populations close to carrying capacity.

Answer:

k

Explanation: