A single event in a story is called an incident. A plot is a series of incidents while a climax is the highest point in which resolution usually begins.
The answer is A: incident: A single event in a story is an incident.
<em>Climax</em> is a decisive moment when the rising action turns around into a falling action. The conflict is faced with the most dramactic event of the story.
<em>Resolution</em> is a literary device that means the conclusion of the story's plot. It's an integral part of the conflit of a story.
<em>Plot</em> is a literary term in a narrative that presents a sequence of events and happenings that make up a story.