In the highlighted portion of the passage, the author assumes that A. consumers' attitude toward the assortment of choices they are presented with depends almost exclusively on the size of the range B. consumers who have clear preferences make their choices more quickly than those whose preferences are relatively vague C. consumers' anticipation of meeting specific expectations directly affects their satisfaction with a selected option D. consumers presented with an assortment of choices often adjust the preferences they had beforehand E. consumers presented with a larger assortment of choices often make their decisions too quickly