What is correct statement about the Harappan script?

Its writing remains undeciphered to date.

The correct answer is Option (4) → Its writing remains undeciphered to date.

The reason statement 4 is correct is that the Harappan script, also known as the Indus script, remains one of the most enigmatic and undeciphered writing systems in the world. Despite many efforts by researchers and scholars over the years, the script's underlying language, its grammatical structure, and the meanings of its symbols have not been definitively deciphered. The script was used by the Indus Valley Civilization, one of the world's oldest urban civilizations, and it remains a subject of ongoing research and study in the field of archaeology and linguistics.

So, the correct option is [4].