The script used for writing Kashmiri is:

Sharada
Persian-Arabic
Devanagari
All of the above

The correct answer is: a) Sharada

Sharada is an ancient Indian writing system that was used to write Sanskrit, Prakrit, and other languages. It is believed to have originated in the 7th century CE and was widely used in Kashmir until the 14th century. Sharada is a cursive script that is written from left to right. It is characterized by its use of ligatures, which are combinations of two or more letters that are written together as a single unit.

Persian-Arabic is a writing system that is used to write Persian, Arabic, and other languages. It is a cursive script that is written from right to left. It is characterized by its use of diacritics, which are small marks that are added to letters to indicate pronunciation.

Devanagari is a writing system that is used to write Hindi, Marathi, and other languages. It is a block script that is written from left to right. It is characterized by its use of vowels, which are written above or below consonants.

Sharada is the only script that was specifically designed for writing Kashmiri. Persian-Arabic and Devanagari are both scripts that were adopted for writing Kashmiri at different points in history.