Final answer:
b. Prince Muhammad Akbar.
Prince Muhammad Akbar was the second son of Aurangzeb who sought Guru Gobind Singh Ji's help against his brother, Muhammad Azam. He is a part of the intricate history of the Mughal Empire and its rulers.
Step-by-step explanation:
The second son of Aurangzeb who was the heir-apparent and who sought assistance from Guru Gobind Singh Ji against his brother, Muhammad Azam, was Prince Muhammad Akbar. This historical event is part of the larger context of the Mughal Empire, which was established by Zahir al-Din Muhammad Babur after defeating the Delhi Sultanate. The empire saw periods of great expansion and is known for its architectural marvels, like the Red Fort and the Taj Mahal, as well as religious debates and tolerance during the reigns of Akbar and his successors Jahangir and Shah Jahan. However, during Aurangzeb's rule, there were increased tensions and conflict with non-Muslim communities, including the Sikhs.