Priscilla just found out she is pregnant, and her doctor prescribed her a B-complex vitamin that promotes normal prenatal development and reduces the risk of preterm deliveries. Which of the following is the vitamin prescribed by Priscilla's doctor?
a. Thiamine
b. Riboflavin
c. Pantothenic acid
d. Folic acid

What is difference between an epidemic and a pandemic? a) an epidemic is a disease; a pandemic is a treatment. b) an epidemic is restricted to a local region; a pandemic is global. c) an epidemic has low mortality; a pandemic has higher mortality. d) an epidemic is caused by a bacterial infection; a pandemic is caused by a viral infection.