If you examine a rock sample and observe fossils in it, what type of rock does the sample represent?

Sedimentary rocks are the only ones that have the ability to preserve a fossil. As the years go by and more layers are added the fossil will always stay secure in the rock.

It depends on the subject for me. some exams are easier than others so i usually go through it and answer questions i know based on my general knowledge, then double check after. going through the lesson can a lot  because the exams can be  very lesson-specific, but sometimes they are ridiculously long so a lot of people don't take the time. i did find that, when i went through the lessons, i was making 100's on my exams vs strictly using + the internet and  i make 90's.