A Drop Down exercise looks like this:
The exercise type 'Drop Down' is used when a single answer choice must be selected from a list of options presented in a dropdown menu.
How to make it:
Add the options from the Texts tab with the + Add -> New option.
New options will be assigned a number.
To specify the correct option, put the number of the option in the Definition field of a solution rule in the Solutions tab.
To create feedback, add a Negative feedback rule in the Negative Feedback tab and put the number of the option you want to give feedback on in the Definition field of the feedback rule.