Dave is planning to build an electric power station to supply electricity to his community. To help him decide which type of electric power station to build, he has put together the table below, which summarizes some of the advantages and disadvantages associated with different technologies. Power Technology Advantage Disadvantage

hydroelectric no greenhouse gas emissions upsets natural ecosystems

coal inexpensive releases greenhouse gases and other pollutants

wind no greenhouse gas emissions can't always supply electricity when it's needed

solar no greenhouse gas emissions expensive to build, install, and replace

natural gas easily supplies electricity when it's needed releases greenhouse gases and other pollutants

If Dave wants to use a technology that does not directly impact climate, which of the above technologies should he consider?

A.

coal, wind, and natural gas

B.

solar, wind, and natural gas

C.

hydroelectric, coal, and solar

D.

hydroelectric, wind, and solar

answer is

D.
hydroelectric, wind, and solar