I would be able to tell you if you posted the passage. Anyways, I would say A is the answer.
Answer:
cons are:
*it may lead to genetic defects
*it limits genetic diversity
*over population
*negative side affects
*unfavorable diversity
pros:
*you have a potential to live longer
*tackling and defeating illness becomes easier
Explanation:
if you need some pros on it just tell me!
<em>~Roma~</em>