Answer:
conflict
Explanation:
The conflict is the central problem of the story and is what the story is about. The theme is the message of the story, so it can't be the answer. The protagonist isn't a problem, the protagonist is the main character.
The technieqe that isn't used is don't announce your intentions, don't use a google dictionary to find the meaning of the word. Don't write words u don't know, hope that helped