Select the incorrect statement from the following.

Options

A. Through vaccines, antigenic proteins of pathogen or dead or weakened pathogens are introduced in the body.
B. Anti-venom provides active immunity.
C. Anti-histamines control allergy
D. Both (a) and (b)

Answer

To solve the question of identifying the incorrect statement from the provided options, we can follow these steps:

### Step-by-Step Solution:

1. **Analyze the First Statement**:
- The first statement discusses vaccines, stating that they introduce antigenic proteins of dead or weakened pathogens into the body.
- **Evaluation**: This statement is true because vaccines are designed to stimulate the immune system without causing disease by using weakened or inactivated forms of pathogens.

2. **Analyze the Second Statement**:
- The second statement claims that antivenom provides active immunity.
- **Evaluation**: This statement is incorrect. Antivenom provides passive immunity, as it contains pre-formed antibodies that help neutralize venom without the body having to produce its own antibodies.

3. **Analyze the Third Statement**:
- The third statement mentions that antihistamines control allergies.
- **Evaluation**: This statement is true. Antihistamines are medications that block the action of histamine, which is responsible for allergy symptoms.

4. **Conclusion**:
- After evaluating all three statements, the second statement about antivenom providing active immunity is the incorrect one.

### Final Answer:
The incorrect statement is: **Antivenom provides active immunity.**