What political advantage did the Company gain by making Mir Jafar the Nawab after Plassey?

Correct answer: It gained indirect control over the Bengal court

The direct answer is A: the Company gained indirect control over the Bengal court. The Battle of Plassey in 1757 enabled the East India Company to influence Bengal's succession and administration. Mir Jafar became Nawab, but he depended heavily on the Company and had to provide money, privileges and political concessions. Thus the Company did not immediately rule Bengal openly; it controlled the Nawab and the court from behind. Option A is correct because this is indirect political control. Option B is wrong because the Company expanded its power rather than leaving India. Option C is wrong because the Simon Commission belonged to the twentieth century, nearly two centuries later. Option D is wrong because Congress received no power through Mir Jafar's appointment and the Congress was founded much later. The key chain is: Plassey, dependent Nawab, Company influence, indirect control. Memory cue: after Plassey, a puppet Nawab helped the Company rule from behind.