Which one depreses brain activity?

Options

A. Morphine
B. Valium
C. Amphetamines
D. Hashish

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks which substance depresses brain activity. This requires us to evaluate the effects of the listed substances on brain function.

2. **Analyzing Morphine**: Morphine is identified as the main opium alkaloid. It primarily depresses the respiratory center, which means it slows down breathing. However, it does not significantly affect overall brain activity.

3. **Analyzing Valium**: Valium is classified as a sedative. Sedatives are known to induce relaxation and calmness in the body. Importantly, Valium does depress brain activity, making it a suitable candidate for the answer.

4. **Analyzing Amphetamines**: Amphetamines are synthetic drugs that act as stimulants. They increase brain activity rather than depress it, making this option incorrect.

5. **Analyzing Hashish**: Hashish is a hallucinogen, which alters perception and does not primarily depress brain activity. Therefore, this option is also incorrect.

6. **Conclusion**: After evaluating all the options, Valium is the only substance that depresses brain activity. Thus, the correct answer is Valium.

**Final Answer**: Valium (Option 2) depresses brain activity.

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