Answer:
C. reflects one or more visible light frequencies.
Explanation:
The color that we see is the color that is deflected from the RGBHSB.etc. This means that the light has all the colors within, and the object it hits absorbs all but one color, in which it deflects for our eyes to see.
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The force of gravity on earth is towards the center of it
In the downward direction
Letters A and D appear to be correct.
The equation of momentum is:

Where p is the momentum, m is the mass and v is the velocity. In this case the mass of the person and the mass of the bike so:

And the velocity of the person riding the bike is 1.2 m/s and so:
