The best statement that describes what would happen if the student increased the angle of the ramp is:
B. The toy car would travel farther because more potential energy would be transferred into kinetic energy.
Increasing the angle of the ramp would increase the height from which the car is released, thus increasing its potential energy. When the car is released, this potential energy is converted into kinetic energy as the car rolls down the ramp. A steeper ramp would allow for a greater conversion of potential energy to kinetic energy, resulting in the car traveling farther.