Answer: It's answers 2: Weathering and Erosion and 3: Black smokers
Explanation: I know because I just did the test and if you search it, it says "Salt in the ocean comes from two sources: runoff from the land and openings in the seafloor. Rocks on land are the major source of salts dissolved in seawater. Rainwater that falls on land is slightly acidic, so it erodes rocks.". (Black smokers are openings in the seafloor.)