Final answer:
The syllable 'Red-' in the first line of the song 'Rudolph the Red-Nosed Reindeer' is syncopated.
Step-by-step explanation:
The correct answer is c) Red-. In the first line of the song 'Rudolph the Red-Nosed Reindeer', the syllable 'Red-' is syncopated. Syncopation is a musical term that refers to emphasizing an off-beat or unexpected note or rhythm. In this case, the stress on the syllable 'Red-' creates a syncopated rhythm.