The doctor asked the patient, "Did you eat anything this morning ?" (Change into indirect speech)

The correct answer is Option D (The doctor asked the patient whether he had eaten anything that morning.).

Key Points:
• Rules for Direct to Indirect Speech Transformation:
• For verbal (Yes/No) questions, the conjunction 'if' or 'whether' is used to connect the reporting clause to the reported clause.
• Never use 'that' along with 'if' or 'whether'.
• The Simple Past Tense ("Did you eat") in direct speech changes to the Past Perfect Tense ("had eaten") in indirect speech.
• Time expressions change accordingly: "this morning" becomes "that morning".
• Option Analysis:
• *Option 1: * Retains simple past tense 'ate' instead of past perfect 'had eaten'.
• *Option 2: * Erroneously uses double conjunction 'that whether'.
• *Option 3: * Uses passive continuous structure 'had been eaten', altering the active voice meaning.
• *Option 4: * Correctly uses 'whether', converts tense to past perfect 'had eaten', and changes 'this morning' to 'that morning'.
• Official Answer: Option 4 is the exact indirect transformation confirmed by the official key.
• Key Takeaway: Remember: Simple Past changes to Past Perfect in indirect speech, 'if/whether' is used for Yes/No questions, and never combine 'that' with 'whether'.