Which of the carotenoid pigments has the greatest provitamin A activity?
A) alpha-carotene
B) beta-carotene
C) gamma-carotene
D) delta-carotene
Question 2
Folic acid fortification has ____.
A) not caused the decrease in NTDs that was expected
B) had no effect on the number of NTDs in this country
C) caused a greater decrease in NTDs than was expected
D) reduced the number of various NTDs by 11-50 in different studies