"The exhausted parents of a 2-month-old infant with colic ask the nurse what is the best method to promote comfort and sleep for the infant. The nurse's initial action is to:
a)advise the mother to follow a milk-free diet for 3 to 5 days.
b)take a thorough, detailed history of usual daily events.
c)administer simethicone drops to provide relief from gas pains.
d)explain that the parents need to stay calm so the infant will remain calm."