If a forest fire occurred in an ecosystem eliminating the majority of the trees and short-tailed mice are naturally selected over long-tailed mice, the evolution of the mice can be primarily attributed to what?   a.  environmental factors.    b.  genetic engineering.    c.  selective breeding.    d.  human impact.

A. environmental factors.

Explanation:

Option B is incorrect because genetic engineering is the branch of science that deals with modification of genetic make-up of living organisms using recombinant DNA technology.

Option C is incorrect because selective breeding involves deliberate actions of human/breeders to favour the mating of 2 parents due to their desirable characteristics.

Option D is incorrect because Human impact has to the with actions of human on something.

The only correct option is A. The forest fire modified the environment of the mice, leading selection of short-tail mice over long-tail mice.