The correct answer is (c) Akbar.
Akbar was the third Mughal emperor, who ruled from 1556 to 1605. He was a great patron of the arts and sciences, and he is said to have learned Hindu music from Lala Kalavant, a famous musician of the time.
Humayun was the second Mughal emperor, who ruled from 1530 to 1540 and again from 1555 to 1556. He was not known to be a patron of the arts, and there is no record of him learning Hindu music.
Jahangir was the fourth Mughal emperor, who ruled from 1605 to 1627. He was also a patron of the arts, but he is not known to have learned Hindu music.
Shah Jahan was the fifth Mughal emperor, who ruled from 1628 to 1658. He was also a patron of the arts, but he is not known to have learned Hindu music.
Lala Kalavant was a famous musician of the time, who is said to have taught Hindu music to Akbar. He was a Hindu, and he is said to have been a great influence on Akbar’s understanding of Hindu culture.