Newborns are susceptible to deficiency if they are not given an injection of this vitamin at birth.
a. vitamin k
b. vitamin d
c. vitamin a
d. vitamin e

Vitamin K

Explanation: "In adults, vitamin K deficiency is rare and usually occurs in people with fat malabsorption problems. However, newborn babies lack vitamin K–producing intestinal bacteria, so they are at risk of vitamin K deficiency. Because breast milk has little vitamin K, breastfed babies are especially vulnerable. Physicians routinely give newborns a vitamin K injection."

c. the runner should sprint as fast as possible to the finish line.