**Core Concept**
The rotavirus vaccine is an inactivated vaccine designed to protect against severe gastroenteritis caused by rotavirus infections. The vaccine schedule typically involves multiple doses administered at specific intervals, with the aim of inducing long-term immunity against the virus.

**Why the Correct Answer is Right**
The rotavirus vaccine is recommended for infants, typically starting at 6-8 weeks of age, and is completed in a series of 2 or 3 doses, depending on the vaccine formulation. The vaccine is usually administered until the child reaches 6-8 months of age. This is because the infant's immune system is still developing, and the vaccine provides optimal protection against severe rotavirus infection during this period.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because the recommended age range for rotavirus vaccination is typically up to 8 months, not 12 months.
**Option B:** This option is incorrect because the rotavirus vaccine is not recommended for children older than 8 months, as the risk of severe infection decreases with age.
**Option C:** This option is incorrect because the rotavirus vaccine is not typically administered beyond 8 months of age, as the infant's immune system is still developing.

**Clinical Pearl / High-Yield Fact**
It's essential to note that the rotavirus vaccine schedule may vary depending on the vaccine formulation and the child's individual health status. Always consult the latest vaccination guidelines and recommendations from reputable health organizations.

**Correct Answer:** C. 8 months.