Correct answer:❓ Sentence: He looked at the document carefully. Description: This sentence tests the correct use of prepositions with common verbs. The verb look usually needs a preposition, and the most natural one here is at. We use look at when we focus our eyes or attention on something specific, like a document, a person, or a screen. Other options do not fit this context. Look on is not used for attention. Look in means inside something, like a bag or a room. Look to is used for hopes, exp