Pls explain defining and non defining relative clauses​

Which is not one of the steps you should take when summarizing information from a source? a. write a strong introductory paragraph for your essay including an interesting hook. b. identify the main points of the passage choose one of the most important details. c. make sure that you haven't changed the meaning of the source and that you accurately represented the main ideas. d. organize and present these main points in an easy to follow way. best answer gets brainliest