The Local Group Is the Environment Around

question 47

Multiple Choice

The Local Group is the environment around

• A) the Sun that contains about a dozen stars.
• B) the Milky Way that contains a few dozen galaxies.
• C) the Sun that contains over a billion stars.
• D) the Milky Way that contains a few thousand galaxies.

---

Definitions:

Marginal Cost

The extra financial burden of producing an additional unit of a product or service.

Average Variable Cost

The cost per unit of output that varies with the level of production, excluding any fixed costs.

Learning-by-Doing

The process through which skill and efficiency are improved over time as a result of practice and experience.

Economies of Scale

The cost advantage that arises with increased output of a product, where the average cost per unit decreases as the scale of production expands.