A Transposable Element Is a Type of Genetic Parasite That

A transposable element is a type of genetic parasite that can invade a host genome from the outside world,spread within the genome and be transmitted to offspring.Under what circumstances,would a transposable element not be able to accomplish this?

A) if it has serious adverse effects on the ability of the host to survive and reproduce
B) if it does not have serious adverse effects on the ability of the host to survive and reproduce
C) if it speeds up the activity of amylase
D) if is slows down the activity of triosephosphate isomerase
E) if it increases the rate at which an organism can sense time