“All India Muslim League” was formed at Dacca in ______.

Correct option is D

On 30 December 1906, the All-India Muslim League (AIML), popularly known as the Muslim League was founded in Dacca (Dhaka), British India (now in Bangladesh).
 The party arose out of the need for the political representation of Muslims in British India, especially during the Indian National Congress-sponsored massive Hindu opposition to the 1905 partition of Bengal.
 The AIME Conference in 1906, held at the Ahsan Manzil palace of the Dhaka Nawab Family, laid the foundation of the Muslim League.
 After the Partition of India and the establishment of Pakistan, the All-India Muslim League was formally disbanded in India.