The method by which grains are separated from stalks is called

Options

A. winnowing
B. threshing
C. sieving
D. decantation

Explanation

To answer the question "The method by which grains are separated from stalks is called," we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks about a specific method used to separate grains from their stalks. It is important to identify the correct term that describes this process.

2. **Identifying the Options**: The options provided are:
- A) Vinoying
- B) Threshing
- C) Sieving
- D) Decantation

3. **Analyzing Each Option**:
- **Vinoying**: This term does not relate to the process of separating grains from stalks.
- **Threshing**: This is a known agricultural process where stalks are beaten to separate the grains from the plant material.
- **Sieving**: This method is used to separate particles based on size, not specifically for grains and stalks.
- **Decantation**: This is a method used to separate liquids from solids, not applicable in this context.

4. **Choosing the Correct Answer**: Based on the analysis, the correct method for separating grains from stalks is **Threshing**.

5. **Final Answer**: The method by which grains are separated from stalks is called **Threshing** (Option B).