The word would be 'use' because it can be used both as a verb and noun but here is used as the noun. We can tell they want a noun since the word 'correct' is an adjective, which describes only nouns. It wouldn't be 'used' because it is a past tense of the verb.
I wish grandpas never died, sober, 8teen. I can relate to them all so it would make sense to put those into the movie.
Informal language is often a conversational tone, because most people don't speak formally when talking to a friend or acquaintance.
Answer: Increase; reduce essentially means decrease.
