How can a selected option from a select one question be set has a default for text question

@chiabotu, maybe you could do it as outlined in the image shared below through the calculation column instead of the default column:

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: when nothing is selected in a select one question

Data entry screen as seen in Enketo: when male is selected in a select one question

Data entry screen as seen in Enketo: when female is selected in a select one question

Reference XLSForm:

Default Response (Jr choice name).xlsx (11.2 KB)