Question

which of the following is an advantage of using geothermal energy?
a. it is free, renewable, and abundant.
b. it is available only in limited areas.
c. it can cause air and groundwater pollution.
d. it can be expensive to maintain.

Explanation:

Geothermal energy is heat from the Earth. It is renewable as the heat is continuously generated. It is abundant in many regions where the Earth's crust is thin (like near tectonic plate boundaries). While there are costs in setting up infrastructure (but not free in that sense, but compared to non - renewable energy sources, the fuel (the Earth's heat) is free in an ongoing sense).

• Option B: Being available only in limited areas is a disadvantage.
• Option C: Causing pollution is a negative aspect (disadvantage).
• Option D: High maintenance cost is a drawback (disadvantage).

Answer:

A. It is free, renewable, and abundant.