Final answer:
The Gurdwara where Guru Arjan Dev Ji was martyred is Gurdwara Dehra Sahib, located in Pakistan. It is a site of immense significance to the Sikh community and marks a critical event in Sikh history.
Step-by-step explanation:
The Gurdwara in Pakistan that stands at the place where Guru Arjan Dev Ji was martyred is D) Gurdwara Dehra Sahib. This historical Gurdwara is a place of great reverence for Sikhs as it marks the site of the martyrdom of the fifth Sikh Guru.
Guru Arjan Dev Ji, who compiled the Adi Granth, the scriptures of Sikhism, faced persecution under the Mughal Emperor Jahangir and was martyred in 1606 after refusing to convert to Islam and make changes to the Sikh scriptures.
Gurdwara Dehra Sahib is situated in Lahore, a city with a rich cultural and religious history, making it a significant landmark for those following the Sikh faith and for historians studying the Mughal-Sikh relations in the region.