Respuesta :
Selective pressures created by environmental factors can lead to success of mutan individuals. So it is D
Answer:
D. mutant
Explanation:
Mutant individuals, or those that carry genetic abnormalities, often supply the variety that is necessary to survival of a population. It is the variation in genetic code which gives some individuals a unique advantage - larger capacities, ability to resist disease, etc.
(From USATestprep)