Which of the following situations is an example of plagiarism?

A. A student writes an original story, noting her favorite science-fiction author as an inspiration.

B. A student quotes a favorite author verbatim as part of his class paper, including correctly formatted citations.

C. A student includes verbatim sections of text from her own previously published work without citation.

D. A student includes a common-knowledge statement such as "the earth is round" in his paper without citation.

A. When I was young and loved going for runs in the park.

B. I walked all three dogs around the park this morning.

C. Walking with a limp as a result of the thorn.

D. Running through the park before breakfast.

A. They restate the argument.

B. They must offer extensive counterpoints to the argument.

C. They do not include cited material.

D. They pinpoint weak areas in the argument.