The sentence that shows the correct use of dashes is "Transforming disaster into opportunity-did you hear what happened?- has made him a hero".
What is a Dash?
A dash (-) is a punctuation mark that is generally used to indicate a pause. They are longer than a hyphen. Dashes are used to separate groups of words.
Dashes interrupt a thought in a dramatic way. They are used when we want to emphasize a point or a sentence.
The sentence "Transforming disaster into opportunity-did you hear what happened?- has made him a hero" uses dashes to emphasize the question and the conclusion.
Therefore, the correct option is a.
Learn more about dashes here:
https://brainly.com/question/8120718
