Choose the odd one out from each series
(a) The glands – thyroid, adrenal, pituitary, prostate
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(b) The conditions – cretinism, myxoedema, goiter, scurvy
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(c) The hormones – insulin, glucagon, cretinism, thyroxine
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(d) The hormonal sources – adrenal cortex, adrenal medualla, cortisone, pituitary.
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