At a four-way stop, when two or more vehicles stop at the same time, the vehicle on first.

The vehicle on the "left" goes first. 

Please correct me if I'm wrong!!..

Hope this helped!!...  :D

This question is an opinionated one, and we don’t know anything about the module or anything, thus we can not answer it. but if you are having trouble on what it is asking basically it is just asking to (using your knowledge on the topic) say which topics you were most interested and which were the most challenging.hope this : p