The conversion of chemical energy to mechanical energy is best described by which example? A. sunlight warming the ground B. electricity boiling water C. fuel being combusted to power a rocket

I believe the best response would be C. Fuel being combusted to power a rocket.

Chemical energy is a type of energy which can undergo chemical transformation via a chemical reaction while mechanical energy pertains to work and movement. Among the choices, the conversion equivalent is C. fuel being combusted to power a rocket. The reaction is a combustion type of reaction so as to be used for launching of the rocket.