Jill is 3 years old. she is hyperactive and learning-disabled. her doctor suggests that jill's problems could be the result of prenatal exposure to though he stresses that the link is not straightforward at this time.

Teratogens.

Explanation:

A teratogen is an agent that disturbs, during pregnancy, the development of the fetus or the embryo. Given that, in the exercise, the doctor suggests that the problem may have been a prenatal exposure, the best guess is a teratogen, which might include any maternal infections, drugs, chemicals or, in rare cases, even radiation. There are many things a teratogen might cause in later stages, such as Jill's problems of learning disability.

answer; intentional; outrageous;