The correct answer is B. Caste-based food taboos.
Sahodaran Ayyappan was a social reformer who fought against caste discrimination in Kerala, India. He organized the “misrabhojanam” (mixed-dining) event in 1896, which was a challenge to the caste-based food taboos that prevented people from different castes from eating together. The event was a success, and it helped to raise awareness of the issue of caste discrimination.
Educational discrimination is the practice of denying people access to education based on their race, ethnicity, religion, or social class. Land ownership restrictions are laws that limit who can own land. Religious orthodoxy is the belief in the traditional teachings of a religion.
While all of these issues are important, they are not the focus of the question. The question is specifically about the “misrabhojanam” organized by Sahodaran Ayyapan, which challenged caste-based food taboos.