Option a is the correct answer. The poet-laureate of Shah Jahan's reign was Kalim / Kaleem. As a prolific writer, he wrote several books of poetry, including the Diwan-i Kalim and the Masnavi-i Kalim. He was also a skilled calligrapher and painter. Kalim was patronized by Shah Jahan and was given the title of "Kavi-i-Saheb" or "Poet Laureate".