Mutations can be brought about by

Options

A. Aniline dye
B. X-rays
C. Auxins
D. D.D.T

Answer

### Step-by-Step Solution:

1. **Understanding Mutations**:
- Mutations are changes in the DNA sequence that can occur naturally or be induced by various factors.

2. **Identifying Inducers of Mutations**:
- The question asks for agents that can induce mutations. These agents can be physical, chemical, or biological.

3. **Analyzing the Options**:
- **Aniline**: This is primarily used in the dye industry and is not known for inducing mutations.
- **Dye**: Similar to aniline, dyes are used for coloring materials and do not typically induce mutations.
- **X-rays**: These are a form of ionizing radiation known to cause DNA damage, leading to mutations.
- **Auxins**: These are plant hormones that regulate growth and do not induce mutations.
- **DDT**: This is an insecticide that is not primarily associated with inducing mutations.

4. **Conclusion**:
- Among the options provided, **X-rays** are the only agents known to induce mutations by causing DNA damage.

### Final Answer:
Mutations can be brought about by **X-rays**.

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