Which of the Following Is Evidence for the Existence of "Dark

question 19

Multiple Choice

Which of the following is evidence for the existence of "dark matter" in the universe?

• A)The rate of expansion of the universe is speeding up.
• B)Stars eventually use up their fuel and stop shining.
• C)The outlying stars in a galaxy appear to rotate more rapidly than expected.
• D)Either there is no proof that dark matter exists, or there is no way to calculate its abundance.

---

Definitions:

Hawthorne Studies

A series of studies conducted in the early 20th century that examined how different work conditions affected employee productivity and concluded that workers were more motivated by attention and social factors than physical conditions.

Classical Management

A theory of management that emphasizes structured organization, hierarchy, and clear, defined roles and duties to enhance efficiency.

Productivity

The efficiency at which goods and services are produced, often measured by the output per unit of input.

Economic Incentives

Financial rewards or benefits used to motivate individuals or entities towards certain behaviors that align with economic goals.