Choose the adverb that correctly modifies the adverb in the sentence: "She speaks English __________ fluently than her brother."

Break Down the Problem

1. Identify the adverb in the sentence that needs modification.
2. Determine the type of comparison being made (degree of fluency).
3. Select the appropriate adverb that fits grammatically and contextually.

Relevant Concepts

• The sentence is comparing two subjects' abilities (her and her brother) in speaking English fluently.
• Adverbs can modify other adverbs by indicating the extent of an action.

Analysis and Detail

1. The base adverb is "fluently," which describes how she speaks English.
2. Since the sentence is comparing her fluency to her brother’s, we need a comparative adverb that denotes a higher degree of fluency.
3. A suitable adverb that works in this context is "more."

Verify and Summarize

The comparative adverb "more" enhances the adverb "fluently," indicating that her speaking fluency exceeds that of her brother.

Final Answer

"She speaks English more fluently than her brother."