Answer:
A). It has a variety of sentence structures.
Step-by-step explanation:
As per the question, the first sentence most adequately narrates the given summary that it employs 'a varied range of sentence structures.' It includes a combination of simple sentences, complex sentences, compound sentences, and compound-complex sentences which makes more clear, interesting, and effective. Using a similar and repetitive sentence structure makes it monotonous for the readers while using a variety of sentences not only makes the idea impactful but also creates the desired tone that promotes a better, effective, and clear understanding of the idea. Hence, option A is the correct answer.