Drug which depresses brain activity and produces feeling of calmness, relaxation, drowsiness and deep sleep is :

Options

A. Hallucinogen
B. Stimulants
C. Sedative
D. Opiate narcotics

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for a type of drug that depresses brain activity and induces feelings of calmness, relaxation, drowsiness, and deep sleep.

2. **Identifying Drug Types**: We need to categorize the types of drugs mentioned in the options. The common categories include:
- **Hallucinogens**: These drugs alter perception and can lead to hallucinations.
- **Stimulants**: These drugs increase brain activity, leading to heightened alertness and wakefulness.
- **Sedatives**: These drugs depress brain activity, promoting relaxation and sleep.
- **Opiate Narcotics**: These are pain-relieving drugs derived from opium, which can also induce relaxation but primarily serve as painkillers.

3. **Analyzing Each Option**:
- **Hallucinogens**: Not applicable, as they do not induce calmness or sleep.
- **Stimulants**: Not applicable, as they increase brain activity and alertness.
- **Sedatives**: This fits the description perfectly, as they are known to induce calmness, relaxation, drowsiness, and deep sleep.
- **Opiate Narcotics**: While they can induce relaxation, their primary function is pain relief, not specifically inducing sleep.

4. **Conclusion**: Based on the analysis, the drug that fits the description of depressing brain activity and producing feelings of calmness, relaxation, drowsiness, and deep sleep is classified as a **sedative**.

5. **Final Answer**: The answer to the question is **Sedative**.

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