When taking the PRAXIS test or any other multiple guess test is to answer the question. I know this is obvious and you are saying, duh. At least on the Praxis content test, you normally have more then enough time. You need to work quickly and efficently.
So if you test asks about
Funeral Insurance you need to make sure you know what that is.
Make sure you knix out answers that have nothing to do with the topic.
Be sure you understand the technical language of your field.
Do all this and you should be fine.