The correct answer is general metabolism.Concept:Balanced diet: The diet that contains all the nutrients carbohydrates, fats, proteins, vitamins, and minerals in the right proportion.Disease: A disease is a condition that negatively affects the normal functioning of the cells, tissues, and organs. It can be caused by germs, lack of a healthy diet, or may even be genetic.Deficiency disease: A disease that is caused by the lack of essential nutrients or dietary elements such as vitamins and minerals in the human body.Explanation:A diet deficient in iodine leads to goiter. The thyroid gland located in the neck regions is affected and swells. This results in disruption of general metabolism that is controlled by hormones released by the thyroid gland.Some other vitamin/ mineral deficiency diseases: Vitamin/ Mineral Deficiency disorder/diseaseSymptomsVitamin-ANight Blindnessloss of vision in darknessVitamin-B1Beri-berifatigue, weak musclesVitamin-CScurvybleeding gums, woundstake longer to healVitamin-DRicketsbones become soft and bendCalciumBone and tooth decayweak bones and tooth decayIronAnemiaweakness