the bioconcentration of DDT in the body fat of Indians is

Options

A. 18-36ppm
B. 5-10ppm
C. 13-31ppm
D. 2-5ppm

Answer

To solve the question regarding the bioconcentration of DDT in the body fat of Indians, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Bioconcentration**:
- Bioconcentration refers to the accumulation of substances, such as pesticides, in an organism. In this case, we are focusing on DDT (Dichloro-Diphenyl-Trichloroethane), which is an organochlorine pesticide.

2. **Properties of DDT**:
- DDT is known for being highly soluble in animal fat and is resistant to metabolic breakdown. This means that once it enters the body, it tends to accumulate rather than being broken down.

3. **Context of DDT Use in India**:
- In India, there has been a prolonged use of DDT for agricultural and public health purposes. This extended exposure leads to higher concentrations of DDT in the body fat of individuals.

4. **Analyzing the Given Options**:
- The options provided for the concentration of DDT in the body fat of Indians are:
1. 18 to 36 parts per million
2. 5 to 10 parts per million
3. 13 to 31 parts per million
4. 2 to 5 parts per million

5. **Identifying the Correct Concentration**:
- Based on the information about the prolonged use of DDT in India and its accumulation properties, the concentration of DDT in the body fat of Indians is reported to be between 13 to 31 parts per million, which is the highest concentration recorded globally.

6. **Conclusion**:
- Therefore, the correct answer to the question is option 3: **13 to 31 parts per million**.