You are presented with the question "What is created when sediment mixes with dead algae?" and the following answer choices: 
- Flowers
 - peat
 - bogs
 - lake
 - Lillypads
 - Water
 - Oil
 - moss

Now knowing that oil is formed by layers of sediment pushing down on decomposing algae and when algae dies, it uses oxygen to decompose, choose the best answer.


 

       Oil  