Aspirin is

Options

A. Antipyretic
B. Tranquilizer
C. Narcotic
D. Anaesthetic

Explanation

### Step-by-Step Solution:

1. **Understanding Aspirin**: Aspirin is a medication that is commonly used for its pain-relieving and anti-inflammatory properties. It is chemically known as acetylsalicylic acid.

2. **Identifying the Function of Aspirin**: The question asks about the classification of aspirin. It is important to know that aspirin is primarily used to reduce fever and relieve pain.

3. **Classifying Aspirin**: Among the options provided:
- **Antipyretic**: This is a type of medication that reduces fever. Aspirin falls into this category as it helps lower body temperature.
- **Tranquilizer**: These are medications that calm the nervous system. Aspirin does not serve this purpose.
- **Narcotic**: Narcotics are addictive drugs that are often illegal and are used to relieve pain but can lead to dependence. Aspirin is not classified as a narcotic.
- **Anesthetic**: Anesthetics are used to induce sleep or loss of sensation, typically before surgery. Aspirin does not have this function.

4. **Conclusion**: Given the classifications, the correct answer is that aspirin is an **antipyretic**.

### Final Answer:
Aspirin is an antipyretic.

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