Which of the following statements explains why light is refracted as it moves from air into glass?

a. The speed of light decreases in glass.

b. The frequency of light decreases in glass.

c. The energy of light increases in glass.

d. The wavelength of light increases in glass.

idk why hjggjhjkhj

the principles and empirical processes of discovery and demonstration considered characteristic of or necessary for scientific investigation, generally involving the observation of phenomena, the formulation of a hypothesis concerning the phenomena, experimentation to test the hypothesis, and development of a conclusion that confirms, rejects, or modifies the hypothesis.