The Mineral we get from Fish is all of these - Iodine, Magnesium, and Iron. Let's understand each of these minerals in detail:

Iodine:
Iodine is an essential mineral that plays a crucial role in the production of thyroid hormones. These hormones are responsible for regulating the body's metabolism, growth, and development. Fish, especially saltwater fish, is an excellent source of iodine. It is also found in seaweed and other seafood.

Magnesium:
Magnesium is another essential mineral that is required by the body for various functions like muscle and nerve function, regulating blood sugar levels, and supporting the immune system. Fish, especially oily fish like salmon, mackerel, and sardines, are rich in magnesium. It is also found in nuts, seeds, and leafy green vegetables.

Iron:
Iron is a vital mineral that is required for the formation of red blood cells and transporting oxygen throughout the body. Fish, especially shellfish like clams, oysters, and mussels, are rich in iron. It is also found in red meat, beans, and leafy green vegetables.

Conclusion:
Fish is an excellent source of various essential minerals like iodine, magnesium, and iron. Including fish in your diet can help you meet your daily requirements of these minerals and promote overall health and well-being.

Explanation:
Fish is a good source of many essential minerals needed for the proper functioning of the body. Some of the minerals obtained from fish are:

Iodine: Fish is an excellent source of iodine, which is essential for the proper functioning of the thyroid gland. The thyroid gland produces hormones that regulate metabolism, growth, and development. Iodine deficiency can lead to goiter, hypothyroidism, and mental retardation.

Magnesium: Fish is a good source of magnesium, which is essential for many biochemical reactions in the body. Magnesium helps in the formation of bones and teeth, and it also plays a role in the proper functioning of the heart, nerves, and muscles.

Iron: Fish is a good source of heme iron, which is easily absorbed by the body. Iron is essential for the formation of hemoglobin, which carries oxygen in the blood. Iron deficiency can lead to anemia, fatigue, and weakness.

Therefore, the correct answer is option 'D' - All of these, as fish contains all of these minerals in varying amounts and is an important source of nutrition.