Answer:
The answer is B: variety in sentence structure and length.
Explanation:
To have good fluency the sentence structure has to vary(so it does not just repeat every time). The length of a sentence must be long enough to make a point, that's why b makes the most since out of all the options.
We debated for an hour, but still his reasoning eluded me.
There needs to be more information is this about a book?
The answer is the one about the school uniforms.
