**Explanation:**

The correct answer is option A, Jotiba Phule.

**Jotiba Phule**
- Jotiba Phule, also known as Mahatma Phule, was born into a low-caste Mali family in Maharashtra, India in 1827.
- He was a social reformer, thinker, and activist who dedicated his life to fighting against caste-based discrimination and advocating for the rights of lower castes and women.
- Phule believed in the equality of all individuals and campaigned against the domination of upper castes, particularly the Brahmins, who held significant power and influence in society.
- He challenged the Brahmanical supremacy and criticized the oppressive caste system that perpetuated social inequality and discrimination.
- Phule founded the Satyashodhak Samaj (Society of Seekers of Truth) in 1873, which aimed to promote education and social equality among all castes and genders.
- He believed that education was the key to social upliftment and worked towards the empowerment of marginalized communities through the spread of education.
- Phule opened schools for lower castes and women, emphasizing the importance of education in breaking the cycle of social oppression.
- He also wrote several influential books and pamphlets, including "Gulamgiri" and "Shetkaryacha Asud," which exposed the injustices faced by lower castes and advocated for their rights.
- Phule's efforts were instrumental in challenging the rigid caste hierarchy and laying the foundation for the social reform movements that followed.
- His contributions to the empowerment of marginalized communities and his relentless campaign against caste-based discrimination have made him an important figure in the history of social reform in India.

In conclusion, Jotiba Phule was born in a low-caste Mali family and spent his life fighting against upper caste domination and Brahmanical supremacy. He dedicated himself to the empowerment of marginalized communities and the promotion of education as a means of social upliftment.