Most common pesticides used in the crops are

Options

A. BHC, aldrin, malathion. pyrethrin
B. Aldrin, malathion, lead arsenate, sodium fluoride
C. Aldrin, malathion, sodium arsenate, lead arsenate
D. Cryolite, aldrin, pyrethrin

Explanation

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks for the most common pesticides used in crops. Pesticides are substances used to kill or control pests that can harm crops.

2. **Identifying Common Pesticides**: The video mentions several pesticides, including:
- BHC (Benzene Hexachloride)
- Aldrin
- Malathion
- Pirimiphos-methyl (referred to as "Piracy" in the transcript)
- Sodium Fluoride
- Lead Arsenate

3. **Analyzing the Options**: From the list of pesticides mentioned, we need to determine which ones are commonly used in agriculture.
- BHC is known for its effectiveness against a variety of pests.
- Aldrin is used for soil insects.
- Malathion is a widely used pesticide for various crops.
- Sodium Fluoride and Lead Arsenate are less common today due to toxicity concerns.

4. **Selecting the Most Common Pesticides**: Based on the information provided, the most commonly used pesticides in crops include:
- BHC
- Aldrin
- Malathion

5. **Conclusion**: The correct answer to the question regarding the most common pesticides used in crops would be a combination of the pesticides mentioned, with BHC, Aldrin, and Malathion being the most notable.

### Final Answer:
The most common pesticides used in crops are BHC, Aldrin, and Malathion.

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