If a normal, healthy adult were to begin consuming a vitamin a-poor diet, approximately how much time would pass before the first deficiency symptoms would appear? ?
a. ? 1 to 2 years
b. ? 2 weeks
c. ? 6 months
d. ? 1 to 2 months
e. ? 6 months to 1 year

Ithink it's d or it can be itger

(a) is not correct because one does not get increased cholesterol  from lifting weights.(b) is not correct because lifting weights cannot reduce the risk of a hereditary disease.(c) is not correct because back pain isn't a benefit! and plus, if he lifts weights properly, he should not have back pain.(d) is the correct answer because his ligaments will gain mass, making it easier for him to carry heavier weights and he will also be stronger!