What usually happens during the climax of a story?

a. a character makes a decision or comes to a realization.
b. the author ties up any loose ends in the story. c. a character is introduced, and the setting is established.
d. the main character's central conflict is introduced.

The answer is; A.

The climax of a story is characterized by high tension and drama and is considered the highest point in the plot. The main character is usually in a crisis and he or she finds a solution to a major conflict (such as  a hero defeating the villain or evil element). Climaxes are considered to be significant in giving the story an overarching meaning.