a scientist crafted the model to illustrate the behavior of a light ray. for what reason might a scientist create this model depicting the behavior of a light ray?

a. to explain that light travels in a straight line until it transitions from one material to another
b. to explain that light travels in a straight line even when transitioning from one material to another
c. to clarify that light follows a curved trajectory even when transitioning from one material to another
d. to clarify that light follows a curved trajectory until it transitions from one material to another