**Core Concept:** In children, the number of teeth present at a specific age is an important aspect of dental development and health. In this case, we are discussing the number of teeth in a 7-year-old child.

**Why the Correct Answer is Right:** At the age of 7 years, children have a total of 28 baby teeth, also known as primary or milk teeth. These teeth are crucial for proper mastication, speech development, and guiding the eruption of permanent teeth. The correct answer is:

**Correct Answer: C. 28 teeth**

**Why Each Wrong Option is Incorrect:**

A. 12: This is incorrect because it refers to the number of permanent teeth, which is not relevant for a 7-year-old child with baby teeth.
B. 32: This is incorrect because it refers to the number of permanent teeth, which will be present in the child's mouth after the eruption of all 28 baby teeth.
D. 36: This is incorrect because it includes the number of permanent teeth, which are not present in a 7-year-old child with baby teeth.

**Why the Correct Answer is Right:** A 7-year-old child has 28 teeth, which includes 8 incisors (4 upper, 4 lower), 4 canines (2 upper, 2 lower), 4 premolars (2 upper, 2 lower), and 1 wisdom tooth (usually erupts between 6-12 years).

**Clinical Pearl:** A thorough dental examination of a 7-year-old child should focus on assessing the dental health, evaluating the eruption of teeth, and identifying any developmental abnormalities or dental anomalies. Early detection and intervention for dental issues can prevent complications and improve the overall oral health of the child.