Q. 3. Most of the sources of energy we use represent stored solar energy. Which of the following is not ultimately derived from the Sun’s energy?
(a) geothermal energy
(b) wind energy
(c) nuclear energy
(d) bio-mass
Geothermal energy is not ultimately derived from the Sun’s energy, it's origin is the high temperature molten rocks present in the core of the earth.
(a) is the correct answer.