Fact 1: Stalactites are formed by deposition.

Fact 2: Soils are sand, clay, limestone, and organic deposits.

Given the two facts above, answer the question "Soil, sand, clay and limestone can form what?" with the following options: 
- detritus
 - stalactites
 - swamp vegetation
 - coral reef
 - fossil fuels
 - Sediment
 - aqueous solution
 - growth


 

  stalactites       