The correct answer is option 1: Thirteen. Akbar was thirteen years old at the time of his coronation at Kalanaur. This event took place in 1556 when Akbar`s father, Humayun, passed away and Akbar ascended to the Mughal throne. At such a young age, Akbar faced numerous challenges and had to prove himself as a capable ruler. Despite his young age, Akbar demonstrated exceptional leadership skills and went on to become one of the most renowned emperors of the Mughal dynasty. His reign was marked by numerous military victories, administrative reforms, and cultural advancements. Akbar`s ability to navigate through complex political situations and his inclusive policies towards different religious and ethnic groups are some of the key factors that contributed to his success as a ruler.