Which sentence uses an elongated hyphen correctly? amber likes dancing—and singing, so she has practiced both since she was a little girl. hilary—daniel—and andre love broadway musicals, so they joined the show choir at their school. the band—is looking for a new drummer because their former drummer moved to a different town. andrew wanted to learn to play the guitar—even though he couldn't read music—so he could join a band.

An elongated hyphen is a more formal way of introducing excess information by means of interjection. It’s only allowed if the information being supplied is critical to the text it interrupts.

The correct choice is D, where the text contained between the hyphens adds extra detail to the sentence. With the inclusion, we now know that Andrew will have to work extra hard to learn the guitar, because he doesn’t know how to read music in the first place. Choice B needs commas instead of hyphens, as it’s introducing a list. Choices A and C need to omit their hyphens entirely.