Usually, in a conclusion, you wrap up what you have been writing about the whole time. So, a conclusion is basically a summary of the whole text. You can introduce new ideas for the reader, but it is usually inadvisable. In a couple of sentences, you should finish your text, referring to the previous paragraphs and just wrap it all up nicely.
<span>C. A thorough explanation of the process is given in the report. (See pages 5-11) contains an errors because there should be a period after "</span>(<span>See pages 5-11)". </span>
Explanation:
this is the summary of the peom sea fever
"a. After the rain ended, the sky became blue" would contain an independent clause and a dependent clause, which makes it a complex sentence, since the latter half wouldn't be the same without the former half.