Final answer:
Mughal Emperor Aurangzeb ordered the beheading of Sikh leader Guru Tegh Bahadur Ji in Chandni Chowk, Delhi.
Step-by-step explanation:
The Mughal Emperor who ordered Guru Tegh Bahadur Ji to be beheaded at Chandni Chowk, Delhi, was Aurangzeb. Guru Tegh Bahadur was a leader of the Sikh religion. Aurangzeb was known for his expansionist strategies and strict adherence to Islamic principles, which often led to the imposition of taxes on non-Muslims and in some instances, the destruction of non-Muslim religious structures such as Hindu temples. The Mughal Emperor who ordered Guru Tegh Bahadur Ji to be beheaded at Chandni Chowk, Delhi was Aurangzeb. Aurangzeb executed Guru Tegh Bahadur Ji due to his refusal to convert to Islam. Guru Tegh Bahadur Ji was the ninth Sikh Guru and a leader of the Sikh religion (a).