What was the main organizational difference between Bolsheviks and Mensheviks?

Correct answer: Bolsheviks wanted a disciplined party while Mensheviks wanted a broad party

Option A is correct because the disagreement centred on the membership and structure of the revolutionary party. Lenin and the Bolsheviks favoured a smaller, tightly organised and disciplined party of committed revolutionaries who would work continuously for revolution. The Mensheviks preferred a broader organisation with more open membership, allowing a larger number of workers and sympathisers to participate. This was not a difference between an army, a peasant body or a church council; both groups were factions of the Russian Social Democratic Labour Party. The distinction is therefore about party organisation and revolutionary strategy, not social identity.