One of the potential pitfalls of multiple choice questions is that students can confuse familiarity with mastery of a subject. In Vet Tech, students are expected to have detailed knowledge of the various areas, but many fall short of that expectation. If they have some general, non-specific knowledge but don't know the details, they may look at multiple choice answers and pick one that seems familiar to them. As we all know, for a well-written multiple choice question, all of the answers (or most) should look "reasonable", but only one is truly correct. I used to teach chemistry at several universities (as does my husband), and we have both observed the same thing with multiple choice questions. Student performance is often surprisingly poor on these questions. I am obligated to use the multiple choice format for portions of all my exams because that is the format they will see for the Vet Tech Board Exams, but I am often disappointed with the result.