(A) is False. The measurement taken in this statement has nothing to do with the marketing director's first measurement.
(B) is False. The fact that competitors try to increase sales by making the the information booths more productive does not support the prediction.
(C) is True. The important customers are invited to attend the booth. They will attract
new customers. This does support the marketing director's prediction.
(D) is False. Let's assume the important customers will attend Vitacorp's booth. Then this fact does not necessarily support the prediction.
(E) is False. In my opinion it is easy to understand why this statement does not support the prediction.
