<prompt> In the treatment of congenital adrenal hyperplasia due to lack of 21 b-hydroxylase, the purpose of administration of a synthetic glucocoocoid is:Inhibition of aldosterone synthesisPrevention of hypoglycemiaRecovery of normal immune functionSuppression of ACTH secretion  <response>: In congenital adrenal hyperplasia, Due to decreased formation of steroids-- decreased feedback inhibition of ACTH. Thus more ACTH is formed which leads to adrenal hyperplasia--exogenous steroids are given to suppress ACTH secretion. 