Who among the following freedom fighters of India was assassinated?

The correct answer is Option (2) → Mahatma Gandhi

Out of the freedom fighters you listed, the one who was assassinated is:

• Mahatma Gandhi 

Mahatma Gandhi, the preeminent leader of Indian independence movement, was assassinated on January 30, 1948 by Nathuram Godse.

• Jawaharlal Nehru, Nana Sahib, and Bal Gangadhar Tilak were all important figures in the Indian independence movement, but they died natural deaths.