Which of the following is an opiate narcotic?

Options

A. amphetamines
B. LSD
C. barbiturates
D. morphine

Answer

To determine which of the following options is an opiate narcotic, we will analyze each option provided:

1. **Amphetamines**: These are classified as central nervous system (CNS) stimulants. They primarily increase alertness, attention, and energy by elevating the levels of certain neurotransmitters in the brain. They are not classified as opiate narcotics.

2. **LSD (Lysergic Acid Diethylamide)**: This is a hallucinogenic drug that alters perception, mood, and various cognitive processes. It is not an opiate narcotic.

3. **Barbiturates**: These are sedative medications that depress the central nervous system. They are used to induce sleep and are not classified as opiate narcotics.

4. **Morphine**: This is a well-known opiate narcotic. It is derived from opium and is primarily used for pain relief, especially in cases of severe pain. Morphine acts on the opioid receptors in the brain, making it an effective analgesic.

Based on the analysis of the options, the correct answer is **morphine**, as it is the only drug listed that is classified as an opiate narcotic.