<prompt> The relaxation of smooth muscle is associated with a reduction in free intracellular calcium ion concentration. The effect of the reduction isReestablishment of inhibition of actin-myosin interactionDeactivation of enzymatic activity of the individual actin moleculesDecreased phosphorylation of myosin moleculesReduced contractile interaction by blocking the active sites of the myosin molecules  <response>: Due to relaxation of smooth muscle, dephosphorylation of myosin by myosin light chain phosphatase. 