The Chairmen of public sector banks are selected by the
Explanation
The Banks Board Bureau (BBB) is the correct answer as it was established in 2016 specifically to recommend candidates for top-level appointments, including Chairmen and MDs, in Public Sector Banks. Although the Union Ministry of Finance acts as the final appointing authority, it does not handle the selection process itself, which is a common point of confusion. This question tests the core concept of institutional reforms in banking governance designed to professionalize the management of state-owned banks.