Frederick is interested in using his diet to elevate his mood. his doctor suggested that he try to increase the amount of in his diet, because it controls the amount of serotonin in the brain.

According to the national health and safety standards: guidelines for out-of-home care, what is the proper adult-to-child ratio for children younger than one year? a. one adult to one child b. one adult to two children c. one adult to three children d. one adult to four children