The correct answer is C. Sodium chloride.
Sodium chloride is the most abundant mineral in seawater, comprising about 85% of all dissolved salts. It is a major source of sodium and chloride in the human diet. Sodium is an essential mineral that helps to regulate blood pressure and fluid balance. Chloride is also an essential mineral that helps to maintain the body’s pH balance.
Calcium carbonate is the second most abundant mineral in seawater, comprising about 10% of all dissolved salts. It is a major source of calcium in the human diet. Calcium is an essential mineral that helps to build and maintain strong bones and teeth.
Potassium chloride is the third most abundant mineral in seawater, comprising about 3% of all dissolved salts. It is a major source of potassium in the human diet. Potassium is an essential mineral that helps to regulate blood pressure and heart function.
Magnesium sulphate is the fourth most abundant mineral in seawater, comprising about
2% of all dissolved salts. It is a major source of magnesium in the human diet. Magnesium is an essential mineral that helps to regulate muscle and nerve function.The other options are not as common as sodium chloride in seawater.