Question

what does the root word \photo\ mean? hot dark light

Explanation:

The root word "photo" comes from the Greek word "phōs" (genitive "phōtos"), which means "light". For example, in words like "photograph" (a picture made using light) or "photosynthesis" (a process that uses light energy in plants), the root "photo" clearly relates to the concept of light. So, the meaning of the root word "photo" is "light".

Answer:

C. light