The thing that makes this passage weak is B. It lacks a variety of sentence structure
This refers to the collection of words that contains a story or narration and is usually didactic.
Hence, we can see that based on the given passage, there is the narration of the activities of Diana that day, however, it lacks a variety of sentence structure as the passage is dull and boring.
This is because the description is boring and uses one variety to describe the activities of Diane.
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