Which of the following rocks is most likely to be weathered by the process of solution?

Limestone is the rock most likely to be weathered by the process of solution. Limestone is a sedimentary rock that is made up of calcium carbonate, which is soluble in water that is slightly acidic. When water containing carbon dioxide from the air or soil dissolves in limestone, it causes a chemical reaction that breaks down the rock into smaller particles. This process is known as solution and is responsible for the formation of many caves and sinkholes in areas where limestone is found. In contrast, slate, graphite, and granite are not soluble in water and are not easily weathered by the process of solution.