An organism was hunted almost to extinction but the population bounced back. which evolutionary change did this species most likely experience

of the following given choices;

a. bottleneck effect

b. migration

c. mutation

d. sexual reproduction

e. disruptive selection  

the answer is; a.

this is because the hunting reduced the genetic diversity of the population and only a small fraction of the population was left to populate the species. most likely, the hunters preferred a particular trait of the species (maybe the fat individuals). the population was therefore left with leaner individuals (hence allele for leanness was favored by the selection pressure). this causes genetic drift in the population over generations.