Just so you're prepared, Transport Canada exams, while all multiple choice ("best" or "most correct" answer), can be tricky and are often wryly referred to as "English" exams. Even native English speakers can have trouble with the wordiness of many of the questions and answers.
Take your time, read the question carefully, note any negatives (i.e. Which of the following is not an example of xyz" vs "which of the following is an example of xyz") and decide what you want to answer prior to looking at the choices. Then, do the same thing with the four multiple choice answers given - read and understand them - before you make your selection. They're trickier than FAA exams, in my opinion, and not just because the FAA question bank is public and the TC one isn't!