How does refraction support the particle theory of light? a.  particles bounce off surfaces similar to the way in which a ball bounces off a wall. b.light slows down and bends when it moves from a less dense to a more dense medium. c. forces act on the particles to push or pull them from one medium to another. d. as light passes through an opening, it spreads out in all directions.

Answer C Forces act on the particles to push or pull them from one medium to another.
Refraction is the property of light that it appears to bend when passing through different mediums.
The particle theory of light suggest that light is composed of various tiny particle.
The light bends due to the force of push or pull on light particles from different mediums. However the nature of this force is yet to be explored. There is no practical evidence for this force.

It is difficult to explain refraction from particle point of view but the only attempt is hypothesising a force.

the correct answer is c