Explanation:

- Option 1: Mukesh Ambani - He is the founder of Reliance Jio and previously served as Chairman. He is currently Chairman and Managing Director of Reliance Industries Limited.

- Option 2: Anant Ambani - He is the youngest son of Mukesh Ambani and is involved in the family business, but he is not the chairman of Reliance Jio.

- Option 3: Isha Ambani - She is the daughter of Mukesh Ambani and serves on various boards, but she is not the chairman of Reliance Jio.

- Option 4: Neeta Ambani - She is the wife of Mukesh Ambani and is involved in various business and philanthropic activities, but she is not the chairman of Reliance Jio.

- Option 5: Akash Ambani - He is the son of Mukesh Ambani and was appointed as the chairman of Reliance Jio Infocomm.

Correct Answer: Option 5 - Akash Ambani