The exchange is dialogue. The two characters are talking to each other--not themselves or the audience directly.
Answer:
To search for sources in the library's catalog search page, you should begin with a/an _______ search.
B. author
Explanation:
The search should be concentrated on Louis Pasteur, who is the author of the germ theory of diseases. Therefore, the search for sources of information should be concentrated on the author. As the search goes on more information will surely be discovered about Louis Pasteur, his discoveries about germs, and more importantly, his conclusions on the germ theory of diseases.
The ease of difficulty with which the subject can be analyzed
because it allows the reader to see what genre "fits" best with the subject or theme in question.<span />
