Fact 1: Sedimentary rocks are formed by deposition.

Fact 2: Limestone is a type of sedimentary rock.

Given the two facts above, answer the question "How is limestone formed?" with the following options: 
- In sediment
 - Deposition.
 - Metamorphic processes.
 - Igneous processes.
 - Magma processes.
 - less water
 - Water expanding
 - It expands


 

  Deposition.       