An old breeding technique is

Options

A. Introduction
B. Selection
C. Mutation breeding
D. Hybridisation

Answer

**Step-by-Step Solution:**

1. **Understanding Breeding Techniques**: Breeding techniques in agriculture are methods used to improve the genetic qualities of plants or animals.

2. **Identifying Old Breeding Techniques**: Among the options provided (introduction, selection, mutation breeding, hybridization), we need to identify which one is considered an old technique.

3. **Evaluating the Options**:
- **Introduction**: This refers to bringing new varieties into a region but is not specifically a breeding technique.
- **Selection**: This is a method where plants with desirable traits are chosen for propagation while undesirable ones are removed.
- **Mutation Breeding**: This involves inducing mutations to create new traits and is a more modern technique.
- **Hybridization**: This is the process of crossing two different varieties but is not as old as selection.

4. **Conclusion**: The oldest breeding technique among the options is **Selection**. It was first applied in Germany to improve the qualities of rye and wheat crops by promoting desirable plants and removing undesirable ones.

5. **Final Answer**: Therefore, the correct answer is **Selection (Option B)**.

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