Question

PLEASE HELP!

Which of the following is true about fuel cells?

A. They only produce energy in short bursts.
B. They are inexpensive.
C. They have never been built or used.
D. They can be designed so that they emit no pollutants.

Answer 1

D is your answer.

The ones being used now use Hydrogen as the fuel which the only byproduct is water.  That gives only negligible emissions

Answer 2

Answer:

D. They can be designed so that they emit no pollutants.

Explanation: