Respuesta :
The correct answer is the first one, because that is the only option where the em dash is correctly used. I have read that book - the first in the series - at least five times.
Answer:
The sentence that shows correct use of an em dash is sentence A.
Explanation:
The em dash is one of the most versatile punctuation marks. It can take the place of commas, parentheses, or colons. In this case, the em dash has been used instead of commas. This NP modifies the noun "the book". In spite of taking the place of commas, it is also important to bear in mind that dashes are always more empthatic than commas.