Now, at the expiration of four years, during which public declarations have been constantly called forth on every point and phase of the great contest which still absorbs the attention and engrosses the energies of the nation, little that is new could be presented. Which is the BEST definition for expiration as it is used in the selected sentence? A) emission of breath B) ceasing to be in effect C) the act of breathing out D) the emission of volatile matter from the earth's atmosphere