The exposition in the little mermaid is when they introduce all the characters, the setting of the story and the problem.
The rising action is when she falls in love with Prince Eric and goes to Ursula, the sea witch, to get legs for three day.
The climax is when Ariel stops the fake wedding Ursula was planning and saves eric from the boat wreck.
The falling action is when Ursula dies in the boat wreck.
The resolution is where Ariel gets her wish of becoming human from King Triton, her father, and her and Prince Eric get married on their boat in the ocean.
