Question

In the sentence, “She had intended to say 'wishfully', not 'wistfully',” the comma is used to set off a _____ expression.

Answer 1

could be parapraxis, honestly i don't know what the answer could be since they're isn't any sort of choices to choose from.

Answer 2

It's a transitional expression, like a pause when talking.

"this not that" is a type of contrasting, parenthetical expression.