Answer:
Dissolves
Step-by-step explanation:
Sediment is a rock material that forms where rocks are broken down into smaller pieces or dissolved in water as rocks erode. 
They are products of rock weathering. 
- Weathering can be defined as the physical disintegration and chemical decomposition of rocks to form sediments and soil.
 -  The first part of the statement describes physical disintegration of rocks where they get broken down into smaller chunks. 
 - The other part simply denotes chemical weathering of rocks which lead to solution of some minerals in the rock. 
 - Both forms are two ways by which rock weathering takes place.