Hi @sudhirCOM,
Welcome to the community! Backing up with what @wroos has advised you, you could do the same following the instructions outlined in the image below:
In the survey tab of your xlsform:
In the choices tab of your xlsform:
Data entry screen as seen in Enketo:
Reference xlsform:
Cascading Select (Multiple Questions).xlsx (21.6 KB)
Have a great day!