Correct option is D
Atom bomb → Heat energy: An atomic explosion releases massive amounts of heat energy along with radiation and nuclear energy.
Melting of ice → Nuclear energy: This is incorrect; melting of ice involves heat energy, not nuclear energy. The correct match is nuclear energy for the atom bomb, but in this context, it was linked to heat energy.
Thunder → Sound energy: Thunder is the sound caused by the rapid expansion of air due to lightning, hence sound energy is produced.
Sunrise → Light energy: Sunrise is a natural source of light energy due to the Sun's rays reaching Earth.