Question

question 8 of 10
which statement is true?

a. sustainable energy is energy that is free to all.
b. sustainable energy is energy that does not cost very much.
c. sustainable energy is energy whose source is renewable.
d. sustainable energy is energy that is easy to transport.

Explanation:

Sustainable energy refers to energy sources that are renewable. Renewable sources can be replenished naturally. For example, solar energy (from the sun) and wind energy (from wind) are renewable.

• Option A: Sustainable energy is not free. There are costs associated with harnessing and distributing it (e.g., building solar panels).
• Option B: Cost - effectiveness is not the defining characteristic. Some sustainable energy sources may have high initial costs (e.g., setting up a large - scale wind farm).
• Option D: Ease of transport is not the key factor. For instance, solar energy is harnessed locally (through solar panels on rooftops) rather than being transported over long distances in the traditional sense.

Answer:

C. Sustainable energy is energy whose source is renewable.