The multiple choice matrix question is a question type that allows you to ask a standard multiple choice question for a number of different variables. For example, you may want to specify how satisfied/dissatisfied you are about a series of variables about your Classes (i.e if you are a student).
How to Use:
In order to use a Multiple Choice Matrix Question, simply drag it from the list of questions (on the left side of your survey editor screen) and drop it onto the right side of your survey editor (where you see a live preview of the questions).
Once the question has been added, you can view the question options on the left side.
Watch this video tutorial on the multiple-choice matrix:
Here is another one to expand on matrix options:
More information here.