**Core Concept**
Exposing or abandoning a child is a serious offense under the Indian Penal Code (IPC), reflecting the importance of protecting vulnerable populations, particularly children. This section addresses the act of leaving a child in a situation where they are likely to suffer harm or neglect.

**Why the Correct Answer is Right**
Section 317 of the IPC specifically deals with "Exposure and abandonment of child under twelve years, by parent or person having care of it." This section makes it a cognizable offense to abandon a child under the age of twelve, recognizing the vulnerability of children and the need to protect them from harm. The act of abandoning a child can lead to physical and emotional harm, and this section aims to prevent such situations. The section applies even if the child is not harmed, as the intention behind abandoning the child is the primary concern.

**Why Each Wrong Option is Incorrect**
**Option A:** Section 320 of the IPC deals with "Grievous hurt," which is unrelated to the abandonment of a child.
**Option C:** Section 323 of the IPC pertains to "Punishment for voluntarily causing hurt," which also does not relate to child abandonment.
**Option D:** Section 84 of the IPC addresses "Act of a person of unsound mind," and is not relevant to the abandonment of a child.

**Clinical Pearl / High-Yield Fact**
It's essential to remember that child abandonment is a serious offense under the IPC, and the intention behind the act is what matters most. This distinction highlights the importance of understanding the specific sections of the IPC and their applications in various scenarios.

**✓ Correct Answer: B. 317. Section 317 of the IPC deals with exposing or abandoning a child under twelve years, by parent or person having care of it.**