Hello. My name is***** can help you with your question.
The best way to ensure success on the exam is to use the training tool that simulates the exam. What you will find is that the questions on the exam are very similar to those in the training tool. Taking the practice questions and then reviewing the answers will help him tremendously in seeing the correct answers on the exam. Many of the questions are worded almost the same. It will also help him identify questions where they try to "trick" you.
That is a link to the training tool. You can purchase it and then download it the next day.
I apologize. You had not mentioned that it was for the automotive exam. Here is a page for the automotive practice exams: