The first scene in Romeo and Juliet that supports the theme of fate is when they meet at the Capulet party. It's a situation that Romeo has no business being in, which adds to the theme that their lives are guided by a force greater than themselves. If Mercutio had not persuaded Romeo to go (he wasn't in the mood for dancing), he never would have met Juliet.
The second scene that supports the theme of fate is when Romeo kills Tybalt. He had tried so hard to keep Mercutio and Tybalt from fighting, and the situation escalated to a point out of his control. He even says "I am fortune's fool" as he exits the scene to avoid the Prince's punishment directly. This punishment is what eventually leads to the tragic ending of the play.
The correct answer is that the reasoning is not sound, the author relies on name-calling.
