Saturation is related to the complexity of light—that is, how wide or narrow the range of wavelengths is

Which of the following students provides the most accurate information about affirmative action in the United States?

a. Lyle: "According to the affirmative action laws, relatively large organizations need to consider qualified women and also people from underrepresented ethnic groups.". b. Carmen: "Affirmative action means that companies must hire unqualified women, rather than qualified men.". c. Bryan: "About half of the affirmative action court cases involve discrimination against highly qualified men.". d. Josefa: "The government sets specific quotas about the number of people that a company must hire from an underrepresented group.".

When people make an observation, then form a hypothesis that explains the observation, and then make more observations to test the credibility of the hypothesis, they are using the ____

a. empirical method b. rational method c. scientific method d. method of authority