Question

hydrogens energy is energy that comes from hydrogen. we harness hydrogen energy through hydrogen fuel cells.
the image below is a simplified illustration of how energy from hydrogen is produced (the only by - product is water).
hydrogen fuel cell
diagram of hydrogen fuel cell with hydrogen in, oxygen in, water out, and energy out
choose the correct answer.
how can we harness hydrogen energy?
options: waterwheels, windmills, hydrogen fuel cells

Explanation:

The diagram on the left shows a hydrogen fuel cell, which is a device to harness hydrogen energy (hydrogen in, oxygen in, water out, energy out). Waterwheels harness water energy, windmills harness wind energy. So the correct way to harness hydrogen energy is via hydrogen fuel cells.

Answer:

C. Hydrogen fuel cells