Question

The original source of all sand is

Answer 1

The original source of all sand is rocks.

Answer 2

The original source of all sand is rocks. 

There are various types of rocks and some rocks are broken down into pieces which leads to become sand.  Moreover, sedimentary rocks are formed by the layers of deposition that takes place. The main difference between a sedimentary rock and sediment is that in case of sedimentary rocks the sediments are stuck together to form a hard rock like structure and sediments are normally loose in nature.