James Prinsep deciphered the ________ script.

Kharosthi

The correct answer is Option (3) → Kharosthi

James Prinsep was a British scholar and orientalist who played a significant role in deciphering ancient scripts, particularly those found in the Indian subcontinent. He is well-known for his work on the script known as Kharosthi.

Kharosthi is an ancient script that was used in parts of ancient India, primarily in regions such as Gandhara (in present-day Pakistan and Afghanistan) during the time of the Maurya and Kushan empires.

It was a script that had largely become undecipherable, and Prinsep's work in the early 19th century was instrumental in decoding it, leading to a better understanding of the inscriptions and texts written in Kharosthi.

So, the correct option is [3].