Which is an example of a literary climax?

A.
Marissa was a nice girl, but Declan wasn't sure he wanted to marry her and spend the rest of his life with her.

B.
Declan was a small town construction worker who enjoyed his job but knew there had to be something more.

C.
After the accident, Declan realized that he loved Marissa and would do anything to win her back.

D.
Declan and Marissa had gotten married years ago, and their beautiful baby girl was now a beautiful young woman.