Please ______ your hand if you know the answer to the question.

• A. raise
• B. raise it
• C. lift
• D. shake

Answer: (A)

The idea being tested is which verb fits the common classroom command to show you know the answer. The natural phrase is to raise your hand. It uses raise with your hand as the direct object, forming the usual way people signal participation: you lift your hand upward to indicate you know the answer. Using a form like “raise it your hand” is awkward and ungrammatical here because you already specify your hand, and adding “it” disrupts the natural structure. “Lift your hand” is grammatically fine but sounds less idiomatic in this context; “shake” describes a different action and doesn’t convey signaling knowledge. So the best choice is raise.