Bacteria used as biopesticide is

Options

A. NPV
B. CPV
C. Bacillus thuringiensis
D. Both (1) and (2)

Answer

### Step-by-Step Solution:

1. **Understanding Biopesticides**: Biopesticides are natural organisms or substances derived from natural materials that are used to control pests. They are an eco-friendly alternative to chemical pesticides.

2. **Identifying Bacteria Used as Biopesticides**: The question specifically asks for bacteria that can be used as biopesticides.

3. **Recognizing Bacillus thuringiensis**: One of the most well-known bacteria used as a biopesticide is Bacillus thuringiensis (Bt). This bacterium produces a toxin that is harmful to certain pests, particularly caterpillars and other insect larvae.

4. **Differentiating from Other Options**: The other options mentioned, NPV (Nuclear Polyhedrosis Virus) and CPV (Cytoplasmic Polyhedrosis Virus), are viruses, not bacteria. Therefore, they do not qualify as biopesticides in the context of this question.

5. **Conclusion**: The correct answer to the question is Bacillus thuringiensis, as it is the only bacterium listed that is used as a biopesticide.

### Final Answer:
The bacteria used as a biopesticide is **Bacillus thuringiensis**.