**Core Concept**
The initiation of breastfeeding in normal delivery is crucial for various reasons. It helps in the release of oxytocin, a hormone that stimulates uterine contractions, thereby reducing postpartum hemorrhage. Additionally, breastfeeding promotes bonding between the mother and the newborn, and it also provides essential nutrition to the infant.

**Why the Correct Answer is Right**
Breastfeeding should be started within the first hour after delivery. This is because the release of oxytocin, also known as the "love hormone," helps in the contraction of the uterus, which in turn reduces the risk of postpartum hemorrhage. The World Health Organization (WHO) recommends initiation of breastfeeding within the first hour of life. The skin-to-skin contact during breastfeeding also helps in the release of oxytocin, promoting bonding between the mother and the newborn.

**Why Each Wrong Option is Incorrect**
**Option A:** Delaying breastfeeding beyond the first hour can lead to decreased release of oxytocin, increasing the risk of postpartum hemorrhage.
**Option B:** There is no specific evidence to suggest that breastfeeding should be started at 6 hours after delivery.
**Option C:** Breastfeeding at 12 hours after delivery may lead to decreased milk production and a longer duration of separation between the mother and the newborn.

**Clinical Pearl / High-Yield Fact**
The WHO's "First Hour" initiative emphasizes the importance of initiating breastfeeding within the first hour of life, as it promotes bonding, reduces postpartum hemorrhage, and provides essential nutrition to the infant.

**Correct Answer: A. Within the first hour after delivery.**