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                              Q:
                           
                           
                                                      | A) Lignite | B) Bituminous | 
| C) Anthracite | D) Peat | 
                              Answer:   D) Peat
                              
                                                            
                              
Explanation:
                               
                           
                           Explanation:
The first of the four stages of coal formation is lignite coal.
There are four stages of coal formation:
1. Peat,
2. Lignite,
3. Bituminous and
4. Anthracite.
 
The bacteria has removed a large portion of the other constituents of the plant matter and left around 25 to 34 percent.
 
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