LSD is

Options

A. hallucinogenic
B. sedative
C. stimulant
D. tranquiliser

Explanation

**Step-by-Step Solution:**

1. **Identify the Full Form of LSD**: The first step is to recognize what LSD stands for. LSD is an abbreviation for Lysergic Acid Diethylamide.

2. **Classify LSD**: Next, we need to classify LSD based on its effects. LSD is known to be a psychoactive substance that alters perception and mood.

3. **Understand the Effects of LSD**: LSD is primarily known for its hallucinogenic properties. It causes significant alterations in sensory perception, leading to visual and auditory hallucinations.

4. **List Additional Effects**: Besides hallucinations, LSD can also lead to other physical effects such as dilated pupils, increased blood pressure, and elevated body temperature. It can alter thoughts and feelings, as well as the awareness of one’s surroundings.

5. **Conclude the Classification**: Based on the effects described, we can conclude that LSD is classified as a hallucinogenic drug. Therefore, the correct answer to the question "LSD is" is "hallucinogenic."

**Final Answer**: LSD is hallucinogenic.

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