Option 1 -> The passage states she now works in dance and does choreography, which would shock her younger self who "never did want to dance" and was an "unwilling child."
Option 2 -> Incorrect. She CAN decipher dance now - that's exactly what she does professionally.
Option 3 -> Opposite of the truth. She explicitly states "as a child, I never did want to dance" and was forced into it.
Option 4 -> Her childhood self had no dreams of dancing (she was unwilling and forced), yet her current reality is being a choreographer - this gap between her past desires and present reality would be incredulous.
Hence, Options 1 and 4 -> The narrator's younger self would be shocked because she became a choreographer despite never wanting to dance as a child, creating an unbridgeable gap between her childhood aspirations (or lack thereof) and her current professional reality in dance -> correct