Explanation:

- Savitribai Phule: She was a pioneering Indian social reformer, educationalist, and poet from the 19th century. She played a crucial role in girls' education and the fight against the caste system in India.

- Option 1: Odisha: Located on the eastern coast of India, Odisha has its own history of freedom fighters and reformers, but it is not the birthplace of Savitribai Phule.

- Option 2: Gujarat: This western Indian state is known for its own historical figures like Mahatma Gandhi but is not associated with Savitribai Phule.

- Option 3: Rajasthan: While a culturally rich state with its own social reformers, Rajasthan is not linked to Savitribai Phule.

- Option 4: Maharashtra: Maharashtra is the correct answer, as Savitribai Phule was born in Naigaon, Satara district of Maharashtra in 1831. She is widely recognized for her efforts in advocating for women's rights and educational opportunities in the state.

Correct Answer: Option 4: Maharashtra