Final answer:
Iodine is not a major mineral; it is classified as a trace mineral because it is required in the diet in only small amounts, in contrast to major minerals like calcium and sodium which are needed in larger quantities.
Step-by-step explanation:
The question asks which of the following is NOT a major mineral:
- (a) Calcium
- (b) Phosphorus
- (c) Potassium
- (d) Sodium
- (e) Iodine
Iodine is the correct answer as it is not classified as a major mineral but rather as a trace mineral. Major minerals are those required in the diet in amounts larger than 100 milligrams per day, such as sodium, potassium, chloride, calcium, phosphorus, magnesium, and sulfur. Iodine, on the other hand, is needed in only small amounts and is classified as a trace mineral.