The last one is the correct answer.
It is "It's going to be a long wait," the nurse confided.
When someone is speaking, there needs to be quotation marks. Also, <em>It's</em> needs an apostrophe because that makes it stand for "It is"
So the last answer is the right one.
Hi, you've asked an incomplete question. However, I provided some context to the text.
<u>Explanation:</u>
The text is an excerpt from the story, <em>"Julius Caesar" </em>by William Shakespeare. We find an ongoing dialogue by the character, Anthony with Caesar. In this dialogue, Antony inquires of Caesar if he intends to expand his achievements as a conqueror; who he intends to plot against next.