Which of the Following Is True of Morning Sickness

Multiple Choice

Which of the following is true of morning sickness?

A) Morning sickness manifests itself only during the third trimester of a woman's pregnancy.
B) Morning sickness is defined as nausea that occurs only before noon in pregnant women.
C) Evidence links the incidence of morning sickness with a lower risk of miscarriage.
D) Over 90% of pregnant women experience morning sickness throughout their pregnancy.