Add a Dropdown

A dropdown keeps answers consistent, which is the point of using one instead of a text box — nobody types Yes, yes, Y and YES into the same field. It can optionally allow typing something outside the list, for the cases the list did not anticipate.

Can someone type their own answer?

Only if you allow it. Off by default, which is what keeps the data consistent.

How many choices can it have?

As many as you like, though a long list is easier to use as a text field.

Which choice is selected first?

None. The field starts empty.