Nora, Who Is Pregnant, Awakens at 2:00 A

Nora, who is pregnant, awakens at 2:00 a.m. craving pickles. The craving probably indicates that ____.

A) ​she drank too much water last night
B) ​she isn't getting enough sleep at night
C) ​her body needs extra salt, which can be found in the pickles
D) ​she is experiencing hormone-induced changes in taste