NPLEX-style questions describe a clinical case and then ask up to 5 questions that are related to the case. For every question, there are 4 answer options. One is the correct answer and the other three are meant to distract you. Usually, some of the incorrect answers can be eliminated quickly. Also, there is often an answer that is incorrect, but has components of the correct answer to trick you.
Our top recommendation when writing NPLEX exams is to read the answers first. We cannot stress this enough. The reason for this is because your knowledge is vast, but each question at its core will only be asking you for one or two units of information. The test-writers have already narrowed down the answers to these units. Also, by reading the answers first, you can structure the case with these answers in mind.