Question

even the tempo changes musicians play in three - quarter, double, or common time, depending on their instrument. which choice makes the sentence most grammatically acceptable? a no change b changes, and c changes, d changes but

Explanation:

The original phrase "tempo changes" creates a comma splice (two independent clauses joined only by a comma). Option C replaces the problematic phrase with just "changes," fixing the comma splice while maintaining the sentence's logical meaning. Option A leaves the error, Option B adds an unnecessary coordinating conjunction, and Option D uses an illogical contrasting conjunction.

Answer:

C. changes,