1. Multiple Choice: Which hormone is primarily responsible for the regulation of milk production in postpartum women? a) Estrogen b) Progesterone c) Oxytocin d) Prolactin Correct Answer: d) Prolactin Rationale: Prolactin is the hormone predominantly responsible for milk production in postpartum women. While oxytocin is involved in the milk ejection reflex, prolactin is necessary for the synthesis of milk. 2. Fill-in-the-Blank: The most common cause of preventable mental retardation in children is _______ deficiency during pregnancy. Correct Answer: Iodine Rationale: Iodine deficiency during pregnancy can lead to cretinism in children, which is a preventable cause of intellectual disability. 3. True/False: Breastfeeding immediately after birth increases the risk of postpartum hemorrhage