Answer: it's a because the answer c makes no sense and theirs no way for it to form from a volcano
I think it is B because horses now have flat teeth, while horses back then had sharper teeth, I think. Tell me if I am wrong.
Explanation:
The influence from radioactivity is inversely proportional to the number of chromosomes , since , humans have more DNA , chromosomes than the insects , and therefore , due to less chromosomes in insects , they are more resistant towards radioactivity .
As the target of the radiation is the DNA .
Hence , It is clear that insect due to lesser DNA are less prone to Radiations .
