Final answer:
The person experiencing 'seeing stars' after being hit in the eye is likely due to phosphenes, which are the sensation of seeing flashing lights, colors, or stars in the absence of external stimuli.
Step-by-step explanation:
The person experiencing 'seeing stars' after being hit in the eye is likely due to c) Phosphenes. Phosphenes are the sensation of seeing flashing lights, colors, or stars in the absence of external stimuli. When the eye is hit, it can cause pressure or mechanical stimulation of the retina, which can trigger the perception of phosphenes.