What is the climax in the story Chivalry by Neil Gaiman?

What is the significance of the climax in Neil Gaiman's story "Chivalry"?

Explanation:

In Neil Gaiman's "Chivalry," the climax of the story occurs when the protagonist, Mrs. Whitaker, is offered an opportunity to attain ultimate happiness by Galahad, who wishes to retrieve the Holy Grail Mrs. Whitaker found at a local thrift shop. The tension and suspense peak as she contemplates her choice. Ultimately, she makes a very human decision: she chooses the well-being of her dead husband over that of a Holy Grail. This is the climax because it is the most emotional and suspenseful part of the story, the results of which ultimately determine the outcome of the story.