∙∙ Insulin deficiency leads to diabetes mellitus∙∙ Hypersecretion or hyposecretion of thyroxine can be associated with enlargement of thyroid gland called goitre.∙∙ Deficiency of corticoids (Glucocorticoid ++ mineralocorticoid) leads to Addison's disease∙∙ Growth hormone hypersecretion in adults leads to Acromegaly.So, the correct answer is '(a)-(v), (b)-(iv), (c)-(i), (d)-(iii)'