which is an example of an instinct?

a rabbit hides when it observes a predator.
a dog wags its tail when it hears a doorbell ring.
a boy pulls his hand away after touching a hot surface.
a dolphin swims through a hoop during an amusement park show.

Which best explains this excerpt’s purpose in the novel’s plot structure? the excerpt creates conflict between characters as part of the rising action. the excerpt provides background information on a character as part of the exposition. the excerpt returns a character to equilibrium as part of the falling action. the excerpt is the point of greatest tension and acts as the climax.