Which of the Following Is an Example of a Primary

question 141

Multiple Choice

Which of the following is an example of a primary innovation?

• A) the discovery that clay heated to a certain temperature becomes permanently hard
• B) the discovery that meat cooked over an open flame may cause some cancers
• C) the realization that meat,when exposed to heat,becomes softer and easier to chew
• D) the discovery of the principle of the wheel

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Definitions:

Objective Methods

Approaches or techniques based on unbiased observations and measurements in research or practice, devoid of personal feelings or opinions.

Congruency

The state or quality of agreeing, being compatible or consistent.

Biased Sample

A nonrepresentative sample.

Representative Sample

A small group representing a larger group in terms of age, sex, ethnicity, socioeconomic status, orientation, for example.