Question: Do you agree that the celebration of the Day of Deliverance in 1939 was justified? Give reasons for your answer? 
Answer: In the 2nd World War Sept 1939 the British declared war on behave of India without consulting the Indians. The Congress high command in protests against the decision taken by the British ordered all the officers to resign from their offices.
In December 1939 when the Congress resigned from their rule of 1939, Quaid-e-Azam declared it as a Day of Deliverance and it dually justified. Congress rule from 1937-1939 had been hated by the Muslims due to the atrocities committed against the Muslims like during the Congress rule, Muslims were not allowed to follow their religious duties, the Hindus consistently intruded the call to prayer and killed many Muslims on slaughtering cows. Some other schemes started against Muslims by the Congress ministry that directly aimed at exterminating the Muslim religion.
These schemes were Bande Matram, a song in which degrading remarks for Muslims were sung and was adopted as the national anthem which had to be sung each day at the beginning of the day. Those who denied were abused and tortured. The introduction of Wardha Scheme In which Hindu was enforced as the official language and organized attacks were made on Muslim worshipers in Mosques, students in all the educational institutes have to bow before Gandhi’s portrait before staring their days preceding and the worst was Vidiya Mandir Scheme in which all students had to go to the Hindu Temples to learn Hindi and Hinduism classes. This was too a very great offense on Muslim culture and an insult to Islam.
So the Muslims saw these reforms as an attempt to convert them to Hinduism. On the other hand the unity between the Hindu and Muslims become irreconcilable and the chance of future unity between Congress and League for united India was doomed.
So it can be concluded that it is obvious that the Day of Deliverance which was announced by Jinnah in 1939 was justified as Muslims are freed from atrocities of Congress rule 1937-1939.
Need to provide further arguments to prove your viewpoint!