Explanation:

- Goitre: A condition caused by iodine deficiency, leading to thyroid gland enlargement.

- Diarrhoea: A condition involving frequent and loose bowel movements, often due to infections or dietary issues.

- Scurvy: A disease resulting from vitamin C deficiency, leading to symptoms like bleeding gums and fatigue.

- Anaemia: A condition caused by a deficiency of red blood cells or hemoglobin, often due to lack of iron, vitamin B12, or folic acid.

Out of these options, three are nutritional deficiency-related diseases: Goitre, Scurvy, and Anaemia. Diarrhoea is different because it is primarily linked to infections or dietary issues rather than being a direct result of nutritional deficiency.

- Diarrhoea is the different one.