Among the four main forms of existence of life recognized in Jainism, which one of the following is not included ?
Explanation
Jainism places every worldly soul in one of four gatis (states of existence): deva (heavenly beings), manushya (humans), tiryancha (animals, plants and other living beings) and naraki (hell beings). Yakshas are a class of minor deities counted among the devas, not a separate form of existence, so Yaksha is the one not included.