Answer:
C. It summarizes and evaluates the source used.
Step-by-step explanation:
Annotations are used in academic paper's bibliography so as to make sure the summarized details of the book are presented in the paragraph. This allows the readers to know what they are dealing with and also presents a sense of what the paper is about.
In source citations, annotated bibliographies are mainly included to give the readers an insight into what is being dealt with in the paper. It also presents an interesting scope of what to be expected, leading the readers to a much more like a 'trailer' version of what the paper will be presenting. Thus, the correct answer is option C. The annotation in the bibliography summarizes and presents an evaluation of what sources are used.