Multiple choice

Dwarfism is caused by a deficiency of

  1. growth hormone

  2. insulin hormone

  3. calcitonin hormone

  4. adrenaline hormone

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A Correct answer
Explanation

Pituitary dwarfism is caused by an underproduction (deficiency) of growth hormone (GH) during childhood, which restricts normal bone and tissue development. Deficiencies in insulin, calcitonin, or adrenaline lead to other distinct metabolic or physiological conditions.