Which of the following suppresses brain function and relieves intense pain?

Options

A. Cocaine
B. Morphine
C. Amphetamine
D. All of these

Answer

To answer the question "Which of the following suppresses brain function and relieves intense pain?", we need to analyze each of the provided options: cocaine, morphine, amphetamine, and all of these.

### Step-by-Step Solution:

1. **Evaluate Cocaine**:
- Cocaine is derived from the coca plant (Erythroxylum coca).
- Its primary use is as a local anesthetic.
- It does not significantly suppress brain function; instead, it can lead to increased alertness and euphoria.
- **Conclusion**: Cocaine is **not** the correct answer.

**Hint**: Remember that local anesthetics are used to numb a specific area, not to suppress overall brain function.

2. **Evaluate Amphetamine**:
- Amphetamines are known as stimulants.
- They are often referred to as anti-sleep drugs, as they promote alertness and can enhance self-confidence.
- They are commonly used by athletes to improve performance.
- **Conclusion**: Amphetamine is **not** the correct answer because it does not suppress brain function.

**Hint**: Stimulants increase brain activity rather than suppress it.

3. **Evaluate Morphine**:
- Morphine is an opium alkaloid.
- It is widely used as a strong sedative and analgesic.
- Morphine effectively induces sleep and relieves intense pain, making it suitable for patients undergoing surgery.
- **Conclusion**: Morphine is the correct answer as it suppresses brain function and relieves pain.

**Hint**: Look for substances that are classified as sedatives or analgesics when considering pain relief and brain function suppression.

4. **Evaluate "All of These"**:
- Since we have established that cocaine and amphetamine do not suppress brain function or relieve pain, the option "all of these" cannot be correct.
- **Conclusion**: This option is also **not** correct.

### Final Answer:
The correct answer is **Morphine**, as it suppresses brain function and relieves intense pain.