___________is mainly used for production of electricity for heating and as a fuel for steam engines and furnaces.

Options

A. Peat
B. Bituminous
C. Lignite
D. Anthracite

Answer

To solve the question, we need to identify the type of coal that is primarily used for the production of electricity, heating, and as a fuel for steam engines and furnaces.

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks for a specific type of coal that is used for various energy production purposes.

2. **Identifying Types of Coal**: There are several types of coal, including:
- Peat
- Lignite
- Bituminous
- Anthracite

3. **Analyzing Carbon Content**: The effectiveness of coal as a fuel source is often related to its carbon content. Higher carbon content generally means better fuel quality.
- Peat: Less than 60% carbon
- Lignite: 65% to 70% carbon
- Bituminous: 70% to 86% carbon
- Anthracite: 86% to 96% carbon

4. **Determining the Best Option**: Among these types, Anthracite has the highest carbon content, which means it produces more heat and is more efficient for generating electricity and heating.

5. **Conclusion**: Based on the analysis, the answer to the question is **Anthracite**.

### Final Answer:
**Anthracite** is mainly used for the production of electricity, for heating, and as a fuel for steam engines and furnaces.

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