Which of the following books is written by Varaha Mihira?

Brihat Samhita

The correct answer is Option (3) → Brihat Samhita

Out of the choices you listed, the book written by Varaha Mihira is: Brihat Samhita

Kumarasambhava, Shakuntala, and Ritusamhara were written by Kalidasa, another famous Indian scholar. Varaha Mihira was an astronomer and mathematician known for his works on astronomy and astrology, with Brihat Samhita being one of his most renowned treatises.