Final answer:
Light hitting the window from the outside is most likely being reflected.
Step-by-step explanation:
The MOST likely thing that is happening to the light that hits the window from the outside is that it is being
reflected. When light hits a window, some of it bounces back into the air, and this process is known as reflection. The reflected light can then be seen by someone standing on the other side of the window.
Learn more about reflection of light