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Please help, this is confusing these are Psychology questions about development,each answer seems to match but I'm not sure,thank you

(1.)What happens if a pregnant woman smokes, drinks, or does drugs during her pregnancy?

(A)The baby is very likely to be born with physical disabilities.
(B)The period doesn't exist once a woman digests harmful toxins.
(C)Harmful toxins negatively affect a baby's development only in the period.
(D)No answer is completely accurate.

(2.)The period is _____.

(A)an important window of time for development
(B)often referring to the development of an unborn baby
(C)something that even sparrows experience
(D)all of the above.