Scientists hypothesize that a particular type of fat
known as "P-fat" is required for the development of
eyesight. Researchers were led to this hypothesis by
observing that babies who are fed formulas low in P-fat
tend to have worse eyesight than babies fed mother's
milk, which is high in P-fat. It has also been shown
that babies that are five to six weeks premature tend to
have worse eyesight than babies carried to term.
Which one of the following, if true, most supports the
scientists' hypothesis?
(A) Adults whose diets lack P-fat tend to have
worse eyesight than those whose diets are high
in P-fat.
(B) A fetus typically receives high levels of P-fat
from the mother during only the last four
weeks of pregnancy.
(C) Babies whose mothers have poor eyesight do
not tend to have poor eyesight themselves.
(D) Babies generally prefer mother's milk to
formulas low in P-fat.
(E) The eyesight of a fetus develops during the last
trimester of pregnancy.