30. The citation cites which of the following types of sources?

Answer: C

Explanation:

The citation cites an article from a magazine.

The citation refers to a source produced by the U.S. Energy Information Administration titled "Famous People: Celsius," which aligns with the characteristics of a magazine article, typically offering concise and informative content about notable individuals.

A) A book

This option is incorrect because the citation does not reference a book, which would typically involve a more extensive and detailed exploration of a topic, rather than the brief overview provided in the source.

B) An encyclopedia

This option is not correct either, as encyclopedias usually provide comprehensive entries on a wide range of topics. The citation does not reflect the depth and breadth expected from an encyclopedia entry.

C) An article from a magazine

This option is correct because the source cited is a brief article from the U.S. Energy Information Administration, which fits the format and style of magazine articles that focus on specific subjects or individuals in a concise manner.

D) An article from a newspaper

This option is incorrect as newspaper articles typically report on current events or issues with a focus on news reporting. The citation does not match this format, as it presents information about a historical figure rather than contemporary news.

Conclusion

The correct answer is C, as the citation clearly represents an article from a magazine that provides succinct information about Celsius. Options A, B, and D fail to capture the nature of the source, which is not a book, encyclopedia, or newspaper article, but rather a brief informative piece suitable for a magazine context.