Here some terms and their explanation are given. How many are incorrect ?
(a) AIDS: Acquired immuno deficiency syndrome
(b) HIV: Human immuno deficiency virus
(c ) ELISA: Enzyme linked inductive steps assemble
(d) NGOs: Non-governmental organisation
(e) MALT: Mucosal associated lymphoid tissue
(f) LSD: Lysergic Acid diacetylmorphine
(g) NACO: National AIDS control Organisation

Options

A. Two
B. One
C. Four
D. Three

Answer

To determine how many terms and their explanations are incorrect, we will analyze each term one by one.

1. **AIDS**: Acquired immunodeficiency syndrome
- This is correct. AIDS stands for Acquired Immunodeficiency Syndrome.

2. **HIV**: Human immunodeficiency virus
- This is correct. HIV stands for Human Immunodeficiency Virus.

3. **ELISA**: Enzyme linked inductive steps assemble
- This is incorrect. ELISA stands for Enzyme-Linked Immunosorbent Assay.

4. **NGOs**: Non-governmental organisation
- This is correct. NGOs stand for Non-Governmental Organizations.

5. **MALT**: Mucosal associated lymphoid tissue
- This is correct. MALT stands for Mucosal Associated Lymphoid Tissue.

6. **LSD**: Lysergic Acid diacetylmorphine
- This is incorrect. LSD stands for Lysergic Acid Diethylamide, not diacetylmorphine.

7. **NACO**: National AIDS control Organisation
- This is correct. NACO stands for National AIDS Control Organization.

Now, let's summarize the incorrect terms:
- ELISA (3rd term) is incorrect.
- LSD (6th term) is incorrect.

Thus, there are **2 incorrect terms** in the list.

### Final Answer:
There are 2 incorrect terms.