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The question is about the Indian Rebellion of 1857 against British Rule and involves identifying who among the four options was betrayed by a friend, captured and put to death by the British.
Option 1: Nana Sahib was a Peshwa who disappeared after the battle of Gwalior and never caught by British. No historical evidence suggests he was betrayed by a friend.
Option 2: Kunwar Singh was a leader in the Indian Rebellion of 1857. He died from a self-inflicted wound and was not captured by the British.
Option 3: Khan Bahadur Khan was sentenced to death by hanging after being captured by the British but not betrayed by a friend.
Option 4: Tantia Tope, a general in the Rebellion and a close associate of Nana Sahib, was indeed betrayed by a friend, captured, and later hanged by the British in 1859. Thus, he is the correct answer.