Choose the question type. This controls the type of answer required. The options are:
- **Yes/No/NA** - the responder will choose from "Yes", "No" or "N/A"
- **Option List** - the responder will choose an answer from a list of options
- **Number** - the responder will be prompted to enter a number
- **Text** - the responder will be prompted to write their answer in a text box