Final answer:
Reflecting light means that the light waves bounce off an object, like a red apple reflecting red light. Absorbing light means that a material takes in the light's energy, as seen in darker materials absorbing more light. Option b and c are the correct definitions for reflecting and absorbing, respectively.
Step-by-step explanation:
The terms reflect and absorb in terms of waves have very specific meanings. When we say that an object reflects a particular color of light, we mean that light of that color bounces off the surface of the object. For instance, if a red apple looks red to our eyes, it is because it reflects red light and absorbs all other colors. Therefore, option b ('Reflect means the wave's energy bounces off of it') is the correct definition of reflection.
On the other hand, absorption is when a material takes in the wave's energy instead of reflecting it. Darker materials are good examples of this since they tend to absorb more light and reflect less. This is aligned with option c ('Absorb means to take in the wave's energy').