3. According to Buddhists, the state of consciousness in which one has

complete happiness and ultimate wisdom is.

A. torah B. yoga C. siva D. nirvana

B. Yoga

The answer here is definitely Nirvana.

nir·va·na

/nərˈvänə, nirˈvänə/

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noun

(in Buddhism) a transcendent state in which there is neither suffering, desire, nor sense of self, and the subject is released from the effects of karma and the cycle of death and rebirth. It represents the final goal of Buddhism.