Answer: A. staying up late studying the night before the test.
Explanation: when preparing for standardized tests, there are some things we can do to help us succeed, for example, reviewing web pages related to the test, where we can find advices on what to study, study material and even some old tests to practice with. We need to also give ourselves plenty of time to prepare, in this way we are going to gain confidence and we are going to be able to review and study all the subjects. And finally we have to focus on the challenging subjects, because those are the ones that will take the most time to learn. Option A is the answer because staying up late studying the night before the test isn't going to help, in fact, it can cause lack of concentration and sleepiness during the test.
