Answer:
Option A
Explanation:
(A) (The use of the conjunction but indicates the existence of a contrast within the sentence.) The latter part of the sentence says that dreams, when they are combined with other data, can tell us much about the dreamer. In order to bring out the intended contrast, the earlier part must mean that dreams by themselves cannot tell us anything about the dreamer. Among the choices, it is the word uninformative that as this meaning and is the answer.
