The museum is known ______ its ancient artifacts.

• A. By
• B. About
• C. For
• D. With

Answer: (C)

The pattern being tested is how we express the reason for something’s fame using known + for. “Known for” is the natural collocation to show what makes something well known or famous. In this sentence, the museum’s reputation comes from its ancient artifacts, so “for” links the museum to that feature.

Using other prepositions would not convey the intended meaning. “Known by” would point to who knows or recognizes it, not what makes it famous. “Known to” sounds like something is known to someone or that it’s a fact someone has learned. “Known with” isn’t a standard way to express fame or reputation.

So the natural and correct form is: The museum is known for its ancient artifacts.