Answer: Option A
Step-by-step explanation:
Coevolution is the process in which one species depends on second species for their survival. One species depends on the survival of the second species.
If there is any change in the environment of one species since the other species depend on the first one, the change would affect the other one to.
If the change would be damaging to one species then the change would be damaging to other species too because both the species are dependent on each other.
So, the correct answer is option a