Answer:
A. to organize source material
C. to avoid plagiarism
D. to direct readers to original sources of information
Explanation:
Researching a certain topic means that one will use, in greater or lesser extent, pieces of information from other authors.
This is, of course, allowed but only if those authors and their works are properly cited in order to avoid plagiarism.
Also, citing these works helps an interested reader to find more information regarding that topic.
Not to forget that the works cited page is usually arranged alphabetically, which makes it more organized and easier to find a necessary work.
