**Core Concept**
The colour-coding system in hospitals for waste disposal is a standardized protocol to ensure safe handling and segregation of different types of waste. This system is based on the characteristics of the waste, such as its toxicity, infectivity, and flammability.

**Why the Correct Answer is Right**
The correct answer is based on the World Health Organization (WHO) guidelines for waste management in healthcare settings. The colour-coding system is designed to prevent the mixing of hazardous and non-hazardous waste, thereby reducing the risk of infection and environmental contamination. The specific colour-coding for medicine waste is **Yellow**, which is used to dispose of discarded medicines, including expired, contaminated, or unused medications.

**Why Each Wrong Option is Incorrect**
**Option A:** **White** is typically used for non-hazardous, non-infectious waste, such as paper, cardboard, and plastic packaging materials.
**Option B:** **Red** is used for infectious waste, including used needles, syringes, and other sharp objects, as well as waste contaminated with blood, bodily fluids, or other potentially infectious materials.
**Option C:** **Blue** is often used for recyclable materials, such as glass, metal, and plastic bottles.

**Clinical Pearl / High-Yield Fact**
Remember the colour-coding system: **Yellow** for medicines, **Red** for infectious waste, **White** for non-hazardous waste, and **Black** for general non-recyclable waste.

**Correct Answer:** B.