Answer:
Lithification is the answer.
the answer choice will be A because they travel at the same speed through only light not one material.
To answer this question, you need to know the definition of Relative Motion:
The motion is relative when it depends on a reference point or referencial system. If you know the reference point, you can determine the velocity of an object.
If you are sitting on your chair, you are not moving relative to it (Your speed is 0 km/s); but as you know, our planet moves around the Sun (Traslation Movement) with a speed of 30.0 km/s. Therefore, you are moving 30.0 km/s relative to the sun.
Alpacas were used for their meat, fibers for clothing, and art, and their images in the form of conopas.
