Answer:
Incomplete third question
I think it should be
C. What was her average speed
Explanation:
Check attachment for solution
D- All wave lengths refract at the same angle
Explanation- The amount of refraction increases as the wavelength of light decreases. Shorter wavelengths of light are slowed more and consequently experience more bending than the longer wavelengths.
The answer for this question is neon
Velocity is the answer..
hope that helps