Answer:
attractive
Explanation:
synonym for alluring is attractive
A is the most suitable answer, although all of the answers are technically correct. B, C and D all serve to add <em>clarity</em> to an essay, which in turn adds interest. A directly adds interest, and the clarity comes as a secondary effect.
Jjjhhhhjhhhhhuuhuuuuhhhhhhhhhhhhhhh B
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