Arocket burns fuel to produce thrust, the force that moves the rocket forward.
a. true
b. false

It is true that when a rocket burns fuel to produce thrust, then that is the force that moves the rocket forward. The correct option among all the options given in the question is option "a". The thrust that is generated by the burning of fuel helps the rocket to overcome the gravitational force and leave the earth's atmosphere.

This answer is very true!