An exercise is a question proposed to the student, who has to provide an answer, be it numerical, textual or graphical.

In a multiple choice answer exercise, the user has to decide among several proposed answers, usually because the answer is textual.

Again, graphics may be used as support. The answer may be pure multiple choice (like in the first example) or a combination of open questions and multiple choice questions (like in the second example).

Example 1: Multiple choice answer

 Example 2: Open and multiple choice answers combined