B. Carefully
Adverbs modify verbs. In this sentence, "approached" is the verb so "carefully" is the adverb.
<span>The sentence below contains a broad pronoun reference:
When you have written a paper, go back and revise it. This will result in a more effective presentation.
This is because the sentence states a cause and effect of the activity being described.</span>
Introduction strategies serve as a gateway to what the passage or article or story is about. This particular passage uses the strategy of introduction by stating an interesting fact or statistic by giving mathematical ideas and numerical statements.
Is this multiple choice? If repetition is an option then probably that.