Which of these number is main idea? i need this answer.

Which of the following best describes the proper use of a "works cited" page? (a)-a works cited page is not needed if you paraphrase your research. (b)-a works cited page is not needed if you use signal phrases. (c)-a works cited page is optional when writing a researched text. (d)-a works cited page is required when writing a researched text.

Who else did the prussian soldiers interact with other characters?

The library carries many current books.what is the adjective