Question

1. which choice best states the main purpose of the text? built in the 1970s, raccoon mountain is a pumped - storage hydropower facility (a “water - battery”) located in the united states along the tennessee river. when energy demand is low, excess power from the regional electric utilitys nuclear plants is used to pump water (from a lower reservoir filled from the tennessee river) up a shaft to the summit lake, where the water is stored as gravitational potential energy. when energy demand peaks, the water drains down from the summit lake, spinning turbines and generating upward of 1,700 megawatts of power—enough to power one million homes for twenty hours. a. to point out the differences between two methods of energy generation b. to explain the basics of how a specific energy technology works c. to discuss the benefits of a new energy technology d. to encourage regional electric utilities to build energy storage facilities

Explanation:

The text describes how the Raccoon Mountain pumped - storage hydropower facility works as a form of energy storage. It explains the process of pumping water up during low - energy demand and releasing it during high - energy demand to generate power. The main purpose is to explain the basics of this specific energy technology.

Answer:

B. To explain the basics of how a specific energy technology works