Answer :
The Hindu idea which did not become part of Buddhism was:
- B. The caste system
According to the given question, we are meant to find the Hindu belief which did not become a part of Buddhism and we can see the relationship between the two religions.
As a result of this, we can see that Buddhism did not adopt the Hindu caste system even if did adopt the belief in reincarnation, and belief in Hindu gods or deities.
Therefore, the correct answer is option B
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