## Core Concept
The Indian Academy of Pediatrics (IAP) provides guidelines for vaccination schedules to protect children from various infectious diseases. These guidelines are regularly updated based on the latest scientific evidence, vaccine availability, and epidemiological data. Vaccinations at specific ages are recommended to ensure immunity against diseases before potential exposure.

## Why the Correct Answer is Right
The correct answer, , corresponds to the Hepatitis A vaccine, which is recommended at 2 years of age according to the latest IAP guidelines. Hepatitis A vaccine is crucial for preventing Hepatitis A virus (HAV) infection, which can cause acute liver disease. Administering the Hepatitis A vaccine at 2 years of age helps in building immunity early in life, especially in regions with high or intermediate hepatitis A endemicity like India.

## Why Each Wrong Option is Incorrect
* **Option A:** - This option does not correspond to a commonly recommended vaccine at 2 years of age according to standard vaccination schedules.
* **Option B:** - This option might refer to another vaccine but is not specified as the correct answer; hence, it's incorrect in this context.
* **Option D:** - Similarly, this option does not align with the recommended vaccine at 2 years of age.

## Clinical Pearl / High-Yield Fact
A key point to remember is that the Hepatitis A vaccine is recommended at 2 years of age in India, reflecting the country's strategy to prevent hepatitis A infections. This vaccine is part of the immunization schedule aimed at reducing the burden of vaccine-preventable diseases.

## Correct Answer Line
**Correct Answer: C. Hepatitis A.**