Which part of speech provides information about the location, time, or direction?

The correct choice is C, as prepositions are specifically designed to show relationships between nouns or pronouns and other words in a sentence. They often indicate various aspects such as location (e.g., "under," "over," "next to"), time (e.g., "before," "during," "after"), or direction (e.g., "to," "toward," "through"). For example, in the sentence "The cat is under the table," the preposition "under" gives information about the cat’s location.

The other parts of speech listed do not fulfill this role of indicating location, time, or direction. Conjunctions primarily connect clauses or sentences and do not provide locational context. Pronouns replace nouns but do not describe relationships or positions. Adjectives modify nouns by describing qualities or states rather than indicating relational information. Therefore, prepositions are the definitive choice for conveying such information.