Concept:This question tests the knowledge of major British proposals regarding Indian self-governance and constitution-making.
Explanation:The August Offer of 1940, made by Viceroy Linlithgow, was the first British proposal to concede that Indians should primarily frame their own Constitution.
It promised the expansion of the Viceroy's Executive Council with a majority of Indians and the establishment of a constituent assembly after World War II.
The offer also stated that no future constitution would be adopted without the consent of minorities.
However, the Congress Party rejected it because it only offered dominion status and not complete independence.
Other options: The Government of India Act, 1935, provided for a federation but did not give Indians the primary responsibility for constitution-making.
The Cripps Proposals (March 1942) promised dominion status and a constituent assembly, but that came later.
The Cabinet Mission (1946) proposed a loose confederation, also after the August Offer.
Thus, the first time the principle was conceded was in the August Offer.
Answer:The correct option is B. August Offer of Viceroy Linlithgow.