Q. Who among the following was called “Nirgranthas”?
Explanation: Among the various sects, the sect led by Vardhamana Mahavira (referred to as Nigantha Nataputta by Buddhist texts) bloomed into a religion called Jainism.
It was earlier known as Nirgranthas (free from bonds). Mahavira was known as Jina (conqueror) of the soul and hence his sect came to be known as Jainism.
Source: Tamil Nadu NCERT