Why can't a cell stop normal processes during interphase?

How is an environment able to support different varieties of organisms?

Groups of organisms with low biotic potential, such as gray whales, that produce at most one offspring every other year a) are r-selected b) are k-selected c) are not subject to density-dependent limiting factors d) show the initial stages of the extinction process e) have escaped from the processes of natural selection and adaptation

Plz ! ive been stuck on this forever