I think we’ll say (c) is created by vibrations in fields.
Light is unusual as a wave because it requires no medium to travel through (precisely because it is an oscillation in these two fields, hence the other name for it - an electromagnetic wave.)
Light is not refracted (bent as it slows down) by a metallic surface, but reflected.
Finally, light is a transverse wave (the disturbance is perpendicular to the direction of motion of the wave) not a longitudinal wave (the disturbance ‘wobbles’ back and forth parallel to the direction of travel of the wave.)
Hope that clears it up!