Ishwara Chandra Vidyasagar is being referred to in the given question.

Explanation:
Ishwara Chandra Vidyasagar was a renowned social reformer, educator, and philanthropist in 19th century India. He was born in 1820 in West Bengal and played a significant role in the movement for women's education and rights.

Widow Remarriage Act of 1856:
During that time, widows in India were treated as outcasts and were not allowed to remarry. Vidyasagar strongly opposed this custom and worked towards the upliftment of widows. He believed that allowing widows to remarry would give them a chance to lead a dignified life and protect them from social stigma.

In 1855, Vidyasagar presented a draft of the Widow Remarriage Act to the British Indian government, which was then passed into law in 1856. This act allowed widows to remarry and removed the social stigma attached to widowhood. This was a significant step towards women's empowerment in India.

Other Contributions:
Apart from the Widow Remarriage Act, Vidyasagar made significant contributions to many other social causes, including:

- Promotion of women's education: He established several schools and colleges for girls and women and worked towards promoting education for women.

- Reform of the Hindu society: Vidyasagar opposed various social evils prevalent in Hindu society, such as child marriage, polygamy, and the caste system.

- Advocacy for women's rights: He worked towards the upliftment of women and advocated for their rights, including the right to inherit property and the right to participate in social and political activities.

Conclusion:
Thus, Ishwara Chandra Vidyasagar was a pioneering social reformer who played a significant role in the upliftment of women and the reform of Hindu society. The Widow Remarriage Act of 1856 was one of his notable contributions towards women's empowerment in India.

Option c is right answer bcoz when his brother died in young age then he thought that it will be very tough to pass all life without husband..