The eye bends light through the Cornea; which does the majority of the bending of the light, and the Lens, which fine tunes the light.
Choice A is false. RNA uses the 5 carbon sugar Ribose
The vibrations travel faster than noise. When the ground moves it is coming directly from the source, and when you hear it the sound waves are big and take more time to travel.
The answer is actually mutualism. Mutualism is where both organisms benefit where as commensalism is where one benefits while the other is unaffected. Bee pollinating a flower is a mutualistic relationship because the bee gets food and the flower is pollinated. (Win/win)