It should be 1929 - 1932 because that's when it dropped the most. All of the other choices have sections where it rises back up.
Answer:
supervising workers, analyzing customers’ needs and problems, and identifying solutions
arranging news media interviews
Explanation: working closely with buyers and other merchandisers to plan product rangesmeeting with suppliers.
C. especially the North since they had the most resources, and more people they thought the South would easily lose.
