An online piano teacher wants to use interactive sheet music to help a young student who struggles with rhythm. Which feature of a digital score application would be MOST effective for addressing this specific issue?
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A
The ability to annotate the score with colorful digital markers.
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B
A built-in digital audio workstation (DAW) for composing new music.
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C
Adjustable tempo playback with a synchronized cursor that follows the notes.
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D
Access to a cloud library with thousands of printable PDF scores.