The class of chemical compounds used for the treatment of stress are called

Options

A. Analgesics
B. Tramquilizers
C. Antihistamines
D. Antibiotics

Answer

To answer the question regarding the class of chemical compounds used for the treatment of stress, we can analyze the options provided:

1. **Analgesics**: These are drugs used to relieve pain. They do not specifically target stress, so this option is not correct.

2. **Tranquilizers**: These are a class of drugs that are specifically used to treat stress and anxiety. They help to calm the mind and reduce feelings of tension, making this option a strong candidate.

3. **Antihistamines**: These are primarily used to treat allergic reactions, such as hay fever. They do not have a direct role in treating stress, so this option is also not correct.

4. **Antibiotics**: These are used to treat bacterial infections and have no relation to stress treatment.

After analyzing all the options, the correct answer is **B. tranquilizers**.

### Step-by-Step Solution:
1. **Identify the options**: We have four options: analgesics, tranquilizers, antihistamines, and antibiotics.
2. **Define each option**:
- Analgesics: Drugs for pain relief.
- Tranquilizers: Drugs for treating stress and anxiety.
- Antihistamines: Drugs for allergies.
- Antibiotics: Drugs for bacterial infections.
3. **Eliminate incorrect options**:
- Analgesics, antihistamines, and antibiotics do not specifically treat stress.
4. **Select the correct option**: Tranquilizers are specifically used for the treatment of stress.

### Final Answer:
The class of chemical compounds used for the treatment of stress are called **tranquilizers**.