It says select all correct answers what was the correct answers
Where are the options? please be more specific in your question so we can do our best to help you
"<u>The professor asked many questions"</u>
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The correct answer is D. The role has been performed by several actors. This is because all other options use active forms. Active voice of the last example would be "Several actors have performed the role".
the words from number 2 are intended to capture the reader's attention