Step 1: Vivekananda's vision of Universal Religion
Swami Vivekananda emphasized that true universal religion should not merely tolerate, but actively accept all religions as valid paths to the same truth.
Step 2: Distinction between tolerance and acceptance
- Tolerance means bearing with differences without interference, but still with a sense of "otherness."
- Acceptance, on the other hand, implies full recognition of the validity of other faiths as equally true.
Step 3: Apply to the question
Hence, the watch-word of universal religion as per Vivekananda is not "tolerance," but "acceptance."
\[
\boxed{\text{Correct Answer: (B) Acceptance}}
\]