Which of the following work has been written by Bharata?

Natyashastra

The correct answer is Option (1) → Natyashastra

Natyashastra of Bharata, a work on dramaturgy, was composed in Sanskrit around c. 300 CE. The "Natyashastra" is one of the most important texts on Indian classical music, dance, and drama. It provides extensive guidance on various aspects of the performing arts, including dance, music, and theater.

The other options mentioned are associated with different authors and subjects:

"Tripitaka" is a Buddhist scripture, and it's a collection of teachings attributed to Gautama Buddha and other early Buddhist scholars, not Bharata.

"Ashtadhyayi" is a Sanskrit grammar text, and it was composed by Panini, not Bharata.

"Sushruta Samhitas" is an ancient Sanskrit text on medicine and surgery, and it is attributed to the ancient Indian physician Sushruta, not Bharata.