**Core Concept**
The question is testing knowledge of the recommended vaccination schedule for infants, specifically the vaccines given at birth and those due at 1 year of age, focusing on the **polio vaccine** and **BCG (Bacillus Calmette-Guérin) vaccine**.

**Why the Correct Answer is Right**
Since the BCG vaccine is given at birth, and the question mentions a child coming in for vaccination at 1 year of age, we need to consider which vaccines are due at this age. The **polio vaccine** is given in multiple doses, with one dose typically given at birth (as part of the OPV - Oral Polio Vaccine) and subsequent doses at 6, 9-10, and 16-18 months of age in some schedules, or at 2, 4, and 6-7 months with a booster at 16-18 months in others, but specific schedules can vary.

**Why Each Wrong Option is Incorrect**
**Option A:** Without the specific details of the option, we cannot directly address why it is incorrect, but typically, the first dose of **Hepatitis B vaccine** is given at birth, making it not the correct choice if we are looking for a vaccine due at 1 year.
**Option B:** Similar to Option A, without specifics, we can't directly comment, but if it refers to a vaccine not due at 1 year, it would be incorrect.
**Option C:** Again, lacking specifics, but if this option is for a vaccine not scheduled for 1 year, it's incorrect.
**Option D:** This option, if referring to a vaccine not due at the 1-year visit, would also be incorrect.

**Clinical Pearl / High-Yield Fact**
It's crucial to remember that vaccination schedules can vary by country and region, but generally, the **Measles, Mumps, and Rubella (MMR) vaccine** and the **Varicella vaccine** are often given at around 1 year of age, with the **Hepatitis A vaccine** sometimes given starting at 1 year in certain regions or based on risk factors.

**Correct Answer:** Correct Answer: D. Measles.