The Figure Above Shows the Marginal Benefit of Additional Minutes

question 178

Multiple Choice

The figure above shows the marginal benefit of additional minutes in a cell-phone plan.The marginal cost is constant at $0.10 per minute.
-What is the optimal number of minutes to purchase?

• A) 0.
• B) 100.
• C) 200.
• D) 300.
• E) 400.

---

Definitions:

Glacial Evidence

Glacial evidence comprises physical features left on the landscape that indicate the past presence and movement of glaciers, such as striations, moraines, and glacial erratics.

Wegener's Hypothesis

The theory proposed by Alfred Wegener suggesting that continents drift across the Earth's surface through geological time, which later became known as continental drift.

Continental Drift

The theory that the continents have moved across the Earth’s surface over geological time, proposed by Alfred Wegener.

Divergent Plate Boundary

A tectonic boundary where two plates are moving away from each other, often resulting in the formation of new crust as magma rises to the surface.