Fill in the following blanks with suitable words
The middle layer of soil is called …………. horizon.

Options

A. A horizon
B. B horizon
C. C horizon
D. D horizon

Explanation

**Step-by-Step Solution:**

1. **Understanding Soil Layers:** The soil is made up of different layers, which are often referred to as horizons. Each layer has distinct characteristics and composition.

2. **Identifying the Layers:** The three main layers of soil are:
- Horizon A (Topsoil)
- Horizon B (Subsoil)
- Horizon C (Parent Material)

3. **Focusing on the Middle Layer:** The question specifically asks for the middle layer of soil. In the context of soil horizons, the middle layer is known as Horizon B.

4. **Naming the Middle Layer:** Horizon B is commonly referred to as the "subsoil." This layer is located beneath the topsoil (Horizon A) and above the parent material (Horizon C).

5. **Final Answer:** Therefore, the middle layer of soil is called **B horizon**.

**Complete Statement:** The middle layer of soil is called **B horizon**.

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