Restrict answer options from a single previous answer

[Kal_Lam]

You could do this using the cascading select question as oultined in the post discussed previously:

How to create a cascading select question?

This is called cascading select. You could learn more on the same from our support article Adding Cascading Select Questions. You could solve your case as outlined in the image shared below: In the survey tab of your xlsform: [Image 1] In the choices tab of your xlsform: [Image 2] Data entry screen as seen in Enketo: [Image 3] Data entry screen as seen in Enketo: [Image 4] Reference xlsform: Cascading Select.xlsx (12.0 KB)

In addition, you could also have a look at our support article Adding Cascading Select Questions to learn more on the same.