4)If light is acting like a particle, then what should you adjust in the simulation to make faster-moving electrons leave the metal surface

We can either increase the frequency of the light source or decrease the wavelength of the light source in the simulation

Explanation:

When light approaches or strike a metal surface, we can observe electrons coming out the metal surface. So, when a light wave hits a metal surface, it becomes protons; thus, we can either increase the frequency of the light source or decrease the wavelength of the light source in the simulation.

Thus, a higher energy photon will strike the electron, and the electrons tend to gain energy from the photons.

the answer is either b or c