Answer: C. abrasion
Acids and salts in ocean water dissolve minerals in rock. This is called as abrasion. The abrasion occurs when the high speed physical agent such as water and wind exerts a frictional force on the materials such as rocks. It results in weathering and erosion of the materials.
In the given situation, the salt and acids will abrade the surface of the mineral rocks when comes in contact with mineral rocks hence, will result in removal of minerals particles and their dissolution in the water.