Substances used in bringing down the body temperature in high fevers are called :

Options

A. analgesics
B. antipyretics
C. antihistamines
D. tranquilizers.

Explanation

To solve the question, we need to identify the term used for substances that help reduce body temperature during high fevers. Let's break it down step by step.

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks for the specific term used for substances that lower body temperature during high fevers.

2. **Identifying the Context**: In the context of medicine and pharmacology, we are looking for a type of drug that has a specific function related to fever.

3. **Defining Key Terms**:
- **Substances**: In this context, substances refer to drugs or medications.
- **Body Temperature**: Refers to the temperature of the human body, which can rise during a fever.
- **High Fever**: A condition where the body temperature is elevated, often due to illness.

4. **Recalling Relevant Knowledge**:
- There are various classes of drugs used to treat symptoms of illness. One class specifically targets fever.
- The term we are looking for is commonly used in medical terminology.

5. **Finding the Correct Term**: The term for substances that reduce fever is **antipyretics**. These are medications specifically designed to lower elevated body temperature.

6. **Selecting the Correct Option**: Based on the definition and understanding, the correct answer to the question is **antipyretics**.

### Final Answer:
The substances used in bringing down the body temperature in high fevers are called **antipyretics**.

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