You are presented with the question "What is formed when calcite is dissolved?" and the following answer choices: 
- graptolites
 - patch reefs
 - a cavern
 - a solute
 - body water
 - tube
 - In sediment
 - glass

Now knowing that acavern is formed by carbonic acid in groundwater seeping through rock and dissolving limestone and limestone Limestone Limestone is a grey rock that is made of calcite, choose the best answer.


 

   a cavern      