Sanjay believed that families living in the Chicago suburbs had healthier teeth than those living in rural Mississippi because there were more dental offices in Chicago. His research showed him that the real cause was a difference in diet between the two regions. This is an example of a(n) __________.

An effective research strategy should produce information from

A) many sources that provide a single type of supporting material. B) a single source that provides many types of supporting material. C) mostly personal experience and direct observation. D) a single source that provides a single type of supporting material. E) many sources that provide many types of supporting material.

Which of the following people would the authors say is acting ethically?

a. a student who delivers a classroom speech that her roommate researched and developed two semesters ago b. a student who buys a research paper, complete with a list of sources used from a research service, and submits it as his own work c. a student who purchases transcripts of televised news programs, quotes from them, and cites these sources in her speech d. a person who presents a speech found on a website because the material was never delivered in front of an audience