During the Delhi Sultanate period, the Jizya was a tax levied on non-Muslim subjects. Traditionally, Brahmins were often exempted from this tax due to their religious status.
The correct answer is Feroz Shah Tughlaq. He was a ruler of the Tughlaq dynasty known for his orthodox religious policies. Feroz Shah Tughlaq explicitly imposed the Jizya tax on Brahmins, overturning the previous exemption and making them liable for the tax, which was a significant policy change during his reign.
Muhammad Tughlaq is incorrect; he was known for his administrative experiments and controversial policies, but not this specific tax imposition on Brahmins. Alauddin Khilji is incorrect; he was famous for his market reforms and military campaigns, not for extending Jizya to Brahmins. Balban is also incorrect; he was a powerful Mamluk ruler who consolidated the Sultanate but did not implement this particular tax policy.