Fact 1: Stalactites are formed by deposition.

Fact 2: Chrissospilia is a cave with stalagmites and stalactites.

Given the two facts above, answer the question "Chrissospilias are formed by " with the following options: 
- deposition
 - pressurization
 - condensation
 - cells
 - decomposition
 - Water expanding
 - erosion
 - tiny polyps


 

 deposition        