Who among the following was the pioneer of widow remarriages in Maharashtra and also started a girls' school in Poona along with his wife?

The correct answer is Jyotirao Govindrao Phule.

Explanation:
Jyotirao Govindrao Phule (also known as Mahatma Phule) was a pioneering social reformer, thinker, and activist in Maharashtra who dedicated his life to education, anti-caste movement, and women's empowerment.

Key Educational and Social Contributions:
1. Girls' School in Poona: In 1848, Jyotirao Phule along with his wife, Savitribai Phule, founded one of the first indigenous schools for girls at Bhide Wada in Poona (Pune). Savitribai Phule became the first female teacher at this school.
2. Pioneer of Widow Remarriage: He actively championed the rights of widows, opposed child marriage, and was a prominent proponent of widow remarriage in Maharashtra.
3. Satyashodhak Samaj: In 1873, he established the Satyashodhak Samaj (Society of Seekers of Truth) to promote social equality and liberate marginalized sections of society.