Correct Answer:
C. He says that he had worked as a manager before becoming a doctor.
This question requires changing a sentence from direct speech to indirect speech. The reporting verb "says" is in the present tense, so the tense of the reported speech generally remains unchanged. However, when one past action occurred before another past event, the past perfect tense may be used to clearly show the sequence of events.
In the sentence, working as a manager happened before becoming a doctor. Therefore, "worked" changes to "had worked", making the relationship between the two past actions clearer while preserving the original meaning.
- Direct Speech: He says, "I worked as manager before becoming a doctor."
- Indirect Speech: He says that he had worked as a manager before becoming a doctor.
- Rule: Past perfect is used to indicate an action completed before another past action.
Therefore, the correct answer is: "He says that he had worked as a manager before becoming a doctor."