Which river island in Assam, formed by the Brahmaputra and shown in this photograph, is one of the world's largest inhabited river islands and a major centre of Vaishnavite monastic culture?

• A Sivasagar
• B Majuli ✓
• C Umananda
• D Dibru-Saikhowa

Majuli is the world's largest river island, located on the Brahmaputra River in Assam, and is renowned for its satras, neo-Vaishnavite monasteries established by Srimanta Sankardeva in the 15th century.