He was the noble character because he was smart, dedicated and loyal and he did what he was told without complaining.
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.
Salinas Valley in December at Henry Allen's ranch
