Choose the correctly written sentence.
- A. The doctor told the patient that he needed rest, which was true.
- B. Being tired, the exam was difficult.
- C. To pass the test, hard work is required.
- D. Having studied all night, the paper seemed easy to him.
Explanation
Only the first sentence keeps every modifier attached to something that can logically perform the action. In the others, an exam cannot be tired, hard work cannot pass a test and a paper cannot study all night. Rewriting each with a human subject would repair them.