A.
As you know, our library needs new books.
The answer is B, The relative pronoun is that; it functions as part of the adverb clause.
Answer:
Hello There. ☆~\---__^:◇:^__---\~☆ The answer to this is. Scholarly books and articles in scholarly journals.
Trade books and magazines geared toward an educated general audience, such as Police Chief magazine, Canadian Paramedicine, or Harvard Business Review.
Government documents, such as books, reports, and web pages.
Hope It Helps!~ ♡
ItsNobody~ ☆