A dropdown list is useful if you need to ask a question that has many alternatives, like a selection of the countries in the world.
If you have a predefined dropdown that you want to use, select the desired dropdown from the bank. the page will be updating with value from the dropdown bank.
Items: Type each item in the dropdown list on one single line. Items must be entered one by one, and only one per line.
A dropdown list lets you distinguish between what is displayed in the list, and the values actually saved in the database. This may be necessary, if you are integrating the data with an external system, for example.
Let's say you make a list of countries, and you want to display the countries as they are normally written. e.g. Germany, France, Italy etc. But you want to save the codes, like DE, FR, IT. This is done by typing one item per line as before, but include both the value to be displayed, and what is stored, separated by "#@". To enter the countries above, type: Germany#@DE, France#@FR, Italy#@IT.