Correct Answer: Rahul said that he would start going to office from the next day.

Solution : The correct choice is the first option .

Narration Conversion:

• The reporting verb said remains unchanged.
• Will start is changed to would start .
• The first-person pronoun I is changed to he , reflecting Rahul's perspective.
• Tomorrow changes to the next day to maintain the time frame from Rahul's original statement.

Therefore, the correct sentence is: Rahul said that he would start going to the office from the next day.