Who among the following rulers of medieval Gujarat surrendered Diu to Portuguese?

Bahadur Shah is the correct answer because he signed the Treaty of Bassein in 1534, ceding Diu to the Portuguese in exchange for military support against the invading Mughal Emperor Humayun. Mahmud Begarha is the most tempting wrong option as he famously resisted the Portuguese at the Battle of Diu in 1509, but he never surrendered the territory. This question tests the core concept of Portuguese colonial expansion and their strategic diplomatic alliances with regional Indian sultanates during the 16th century.