What is the meaning of Khalsa Panth?

Army of the pure.

The correct answer is Option 2 - Army of the pure.

Khalsa Panth means Army of the pure.

In the late seventeenth century the tenth preceptor, Guru Gobind Singh, included the compositions of the ninth guru, Guru Tegh Bahadur, and this scripture was called the Guru Granth Sahib. Guru Gobind Singh also laid the foundation of the Khalsa Panth (army of the pure) and defined its five symbols: uncut hair, a dagger, a pair of shorts, a comb and a steel bangle. Under him the community got consolidated as a socio-religious and military force.