C.R.A.P. is short for
P. Purpose/Point of View
Applying the C.R.A.P. Test to a source, such as a book, article, or website, is one way to evaluate the quality and value of it before you start writing your paper. The quality of your final research project is related to the quality of the sources you use. Check out this handout about the C.R.A.P. test.