Fact 1: Sediment is formed by weathering.

Fact 2: Exfoliation is a specific type of mechanical weathering that occurs in granite.

Given the two facts above, answer the question "What is one way sediment can form?" with the following options: 
- It expands
 - rainfall
 - calcite
 - bottom of feet
 - Water expanding
 - Exfoliation
 - chemical changes
 - swamp vegetation


 

      Exfoliation   