Assertion (A): The Congress Ministries in all the provinces resigned in the year 1939. Reason (R): The Congress did not accept the decision of the Viceroy to declare war against Germany in the context of the Second World War.

The correct answer is A because both the assertion and the reasoning are factually accurate and directly linked. In 1939, when the Second World War broke out, Lord Linlithgow, the then Viceroy of India, declared India as a party to the war against Germany. This declaration was made unilaterally without consulting the Indian National Congress or the elected provincial ministries. The Congress objected to this decision, arguing that a democratic nation like Britain could not expect India to fight for freedom abroad while denying it to its own people. As a mark of protest against this decision and the lack of consultation, the Congress Ministries in all provinces resigned in October and November 1939. Therefore, the reason provided perfectly explains the action taken in the assertion.