Respuesta :
Answer:
A. Sound, which travels in waves, can't travel through a vacuum.
Explanation:
Light as a particle consists of particles called protons which carry some amount of energy that are reflected by objects when emitted.
Light as a wave can travel through a vacuum but sound, which travels in waves, can't travel through a vacuum.
Answer:D. DIFFRACTION IS OBSERVED WITH LIGHT
Explanation: Light has a dual nature it can exist as both a wave and particle, as a wave you see light in the electromagnetic spectrum from visible light,XRays,Gamma rays infrared. etc the path a light follows can be slightly distorted by an obstruction causing it particles to move in another direction. sound exists as a photon as shown by Schrodinger's equation and theory, and in Quantum physics.