The correct option for this question is Option 1: S. Ramanujan.

The movie "The Man Who Knew Infinity" is a 2015 British biographical drama film directed by Matt Brown. The movie is based on the real-life story of the Indian mathematician Srinivasa Ramanujan, who made significant contributions to mathematical analysis, number theory, and continued fractions.

Ramanujan was born on December 22, 1887, in Erode, Tamil Nadu, India. From a very young age, he showed an extraordinary ability in mathematics, and by the age of 13, he had mastered trigonometry and developed his own theorems. However, he faced financial difficulties and struggled to pursue his education until he was discovered by G.H. Hardy, a prominent English mathematician, who recognized his talent and invited him to study at the University of Cambridge in England.

Ramanujan`s contributions to mathematics include pioneering work in the areas of divergent series, elliptic functions, and modular forms. He published many papers during his short life but was plagued by health problems and returned to India in 1919, where he died at the young age of 32.

The movie "The Man Who Knew Infinity" portrays the struggles and achievements of Ramanujan`s life, including his friendship with Hardy and his journey to Cambridge. The movie also highlights the challenges that Ramanujan faced as an Indian mathematician in a predominantly white and Eurocentric academic environment.

Overall, "The Man Who Knew Infinity" is a powerful and moving portrayal of the life of Srinivasa Ramanujan, a brilliant mathematician whose contributions to the field continue to be celebrated today.