Interface ListItem

A question item that allows the respondent to select one choice from a drop-down list. Items can be accessed or created from a Form.

// Open a form by ID and add a new list item.
var form = FormApp.openById('1234567890abcdefghijklmnopqrstuvwxyz');
var item = form.addListItem();
item.setTitle('Do you prefer cats or dogs?')
    .setChoices([
        item.createChoice('Cats'),
        item.createChoice('Dogs')
    ]);