Answer: a) A liberated soul.
Explanation: According to Jainism, a Siddha is a liberated soul that has gone beyond Saṃsāra, is at the apex, is omniscient, and remains there eternally. Siddhas are believed to have attained liberation from the cycle of birth and death and have achieved the highest spiritual state.
Ancient India 
Indus valley civilization 
Maurya Empire 
Modern Indian History 
Advent of Europeans 
Maratha Empire 
The Mughal Empire 
Delhi Sultanate 
Chauhan Rajput 
Gupta Empire 
Magadha Empire 
Buddhism 
Jainism 
Vedic period