Correct Answer: The doctor said to her, “Keep off the sweets for a while.”

Solution : The correct choice is the third option.

In reported speech, information or statements conveyed by someone else are reported indirectly. To convert this to direct speech, we directly quote what was said, often adjusting verb tenses and pronouns.

• Structurally, the direct form quotes the speaker's exact words, employing quotation marks to enclose the spoken statement.
• The verb tense might change according to the shift from reported speech to direct speech. In this case, "advised" changes to "said".
• Pronouns may also change, but in this sentence, they remain the same.

Therefore, the direct form would be: The doctor said to her, "Keep off the sweets for a while."