Which one of the following is an opiate narcotic ?

Options

A. Barbiturates
B. Morphine
C. Amphetamines
D. LSD

Explanation

**Step-by-Step Solution:**

1. **Understanding Narcotics**: Begin by defining what narcotics are. Narcotics are drugs that have a sedative effect, meaning they relax the body, relieve pain, and can induce sleepiness.

2. **Identifying Opiates**: Next, clarify what opiates are. Opiates are a specific category of narcotics that are derived from opium, which is obtained from the poppy plant.

3. **Analyzing the Options**:
- **Barbiturate**: These are depressants that slow down the activity of the central nervous system (CNS).
- **Morphine**: This is a natural opiate narcotic derived from opium.
- **Amphetamines**: These are CNS stimulants that increase the activity of the nervous system.
- **LSD (Lysergic Acid Diethylamide)**: This is a hallucinogen that alters perception and affects the senses.

4. **Selecting the Correct Answer**: From the analysis, morphine is identified as the only option that is an opiate narcotic.

5. **Conclusion**: Therefore, the answer to the question "Which one of the following is an opiate narcotic?" is **morphine**.

---