Darcel and her friends were tentatively planning a weekend trip to the local mall but then thought they better stay home as the weather report for the weekend was predicting a lot of snow. But that Friday, Darcel read that one of their favorite mall stores was running a huge sale promotion so the trip was back on their calendars. Darcel's decision is based on what type of influences? a. Individual b. Situational c. Demographic d. Societal