A woman in labor for over 12 hours has very little progress. The health care provider thinks that her contractions lack the force needed to propel the infant downward through the birth canal. The provider asks a group of nursing students which hormone may need to be given to increase the force of the contraction. Which hormone would be the best answer?
A. oxytocin, a posterior pituitary hormone
B. antidiuretic hormone, a posterior pituitary hormone
C. luteinizing hormone, an anterior pituitary hormone
D. growth hormone, an anterior pituitary hormone