Correct Answer: The guard said to the boy, “Weren’t you told to be indoors?”

Solution : The correct choice is the third option .
Direct speech, also known as quoted speech or direct discourse, refers to the representation of someone's words or statements exactly as they were spoken.
Narration conversion:

• "Asked" changes to "said" to introduce the direct speech.
• The third person pronoun "he" changes to the second person pronoun "you".
• The past perfect "hadn’t been told" changes to the simple past "weren’t you told" in direct speech.
• The indirect question becomes a direct question, hence "Weren’t you told?"
• Direct speech uses quotation marks to show the exact words spoken. "Weren’t you told to be indoors?"

Therefore, the direct speech would be: The guard said to the boy, “Weren’t you told to be indoors?”