The correct answer is: B. Vishwasen.
Vishwasen was the first Gandhar of Sumtinath Tirthankar. He was a very talented musician and singer, and he used his skills to spread the message of Jainism. He was also a very wise and compassionate person, and he helped many people to find peace and happiness.
A. Bhanuraj was a very powerful and influential king. He was a great warrior, and he conquered many lands. However, he was also a very cruel and unjust ruler. He oppressed his people, and he caused a lot of suffering.
C. Kritverma was a very intelligent and skilled diplomat. He was able to negotiate peace treaties between many different kingdoms. However, he was also a very ambitious and power-hungry man. He was willing to do whatever it took to get what he wanted, even if it meant hurting others.
D. Charam Swami was a very holy and revered monk. He was known for his wisdom and compassion. He helped many people to find peace and happiness. However, he was also a very strict and demanding teacher. He expected his students to follow his teachings to the letter, and he would not tolerate any deviation.
In conclusion, the correct answer is: B. Vishwasen.