The _ is the innermost part of the Earth .

Options

A. Core
B. Oceanic core
C. Crust
D. Mantle

Answer

To answer the question "The _ is the innermost part of the Earth," we need to identify the correct term that describes this part of the Earth.

### Step-by-Step Solution:

1. **Understanding Earth's Structure**: The Earth is composed of several layers. The outermost layer is known as the crust, beneath which lies the mantle.

2. **Identifying the Layers**:
- **Crust**: This is the outer layer of the Earth.
- **Mantle**: This layer is located below the crust and is made up of semi-solid rock that flows slowly.
- **Outer Core**: This layer is beneath the mantle and is liquid, composed mainly of iron and nickel.
- **Inner Core**: This is the innermost layer of the Earth, which is solid and also made primarily of iron and nickel.

3. **Determining the Innermost Part**: From the layers identified, the innermost part of the Earth is the **Inner Core**.

4. **Final Answer**: Therefore, the correct term to fill in the blank is "Inner Core."

### Complete Answer:
The **Inner Core** is the innermost part of the Earth.

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