Answer:
A, its sounds the best to me
A. <span><span>I'd love to stay and talk, but—yikes! I'm really late now.
</span>This is the correct answer. The dash here is used properly because it shows the break in thought, and it changes the tone of the speaker. That is one use of dashes.
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B. </span></span><span>Today we studied a poem, did an experiment, and multiplied fractions. (The sentence doesn't need the dash.)
C. </span><span>The coat—one of the most colorful that I've seen--seemed to be made of string. (It needs another dash after seen.)
</span>D. <span>There on the stage was my sister! (Does not need the dash.)</span><span>
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In Act V, scene III of Romeo and Juliet, Paris represents an outside pressure that escalates a conflict because Paris wants to wed Juliet, but before they get to meet each other Juliet falls for Romeo. They get secretly married by Friar Laurence.
Her parents want her to marry Paris, he goes to ask to the same Friar to marry him with Juliet.