Q. Who got an opportunity to become Professor of Indian Philosophy in the University of California in 1911?

Correct Answer: a) Har Dayal

Explanation:
– Lala Har Dayal went to the United States in 1911 and received an opportunity to teach Indian philosophy at the University of California (often referenced in exam sources; he also lectured at Stanford).
– The others do not fit:
– Virendranath Chattopadhyay (Chatto) was active mainly in Europe.
– Sohan Singh Bhakna was a labor leader and the founding president of the Ghadar Party, not an academic.
– Shyamji Krishna Varma was based in the UK/Europe and associated with India House, not the University of California.