The correct option is D Combination of estrogen and progesterone
Menstruation can be defined as the periodic discharge of blood, tissue, fluid and mucus from uterus through vagina of the adult females.
Menstrual flow is caused by a sudden reduction in the hormones estrogen and progesterone, which breaks down the endometrial lining.
Thus, if we administer combination of estrogen and progesterone, the endometrium linning would be maintained and there will be no menstrual flow.
Therefore, menstruation can be deferred by the administration of combination od estrogen and progesterone.