Step 1: Understand the meaning of the words.
"Rapt" means being completely absorbed or engrossed, which fits the context of the sentence, where the audience is deeply focused on the artist.
The other options do not fit:
"Wrapped" refers to being covered, not absorbed.
"Roped" means tied or enclosed, which doesn’t apply here.
"Rapped" means a type of music or knocking sound, which is unrelated.
Step 2: Hence, the correct answer is (1) Rapt.