Read about Amber, and answer the question. Amber has been given this homework assignment: Find a word that has the opposite meaning as the word expensive.

Which resource will best help Amber complete her assignment?

a dictionary, because it provides the word’s correct spelling
a dictionary, because it provides the word’s definitions
a thesaurus, because it lists all the synonyms of the word
a thesaurus, because it lists all the antonyms of the word