Question : Gurmukhi, Dogri and Sindhi scripts have developed from which among the following scripts?

Answer :
Sarada script
Sarada is a script of the Brahmic family of scripts, developed around the 8th century. It was used for writing Sanskrit and Kashmiri. The Gurmukhi script was developed from Sarada by Guru Angad. Originally more widespread, its use became later restricted to Kashmir, and it is now rarely used except by the Kashmiri Pandit community for ceremonial purposes. There are several variants of Sarada Scripts such as Takkari or Tankari which is the parent of the Dogri script, Kului script (Kullu in Himachal Pradesh), Chameali Script (in Chamba Himachal Pradesh), Sindhi, Bania of Punjab etc.