Please help! I really don’t understand this.

Answer:
4. Which sentence contains a cliché? Sentence B.
5. The flowers were dry and thirsty, as was the lawn which was turning brown, but I was of no use during this drought that came on fast and killed all the plants and foliage.
6. I would have to say the answer is B, as well.
Explanation:
Note: A cliché is a trite expression, often a figure of speech whose effectiveness has been worn out through overuse and excessive familiarity.
In sentence C, "faster than a speeding bullet" is a cliché
In sentence A, the cliché here is that "children are well behaved only because they want things"', however no particular figure of speech was used to describe it.
The only sentence that uses lots of clichés and figures of speech is sentence B, and as stated above it's re-written without any of that - just straightforward like the question asks.
I hope this helps? If it does, please mark this as the Brainliest answer?