Final answer:
Flashes of light in the peripheral vision can be a symptom of retinal detachment. Other symptoms may include floaters, a shadow or curtain-like appearance in side vision, or a sudden decrease in vision.
Step-by-step explanation:
The correct answer is a) 'I see flashes of light in my peripheral vision.' Flashes of light in the peripheral vision can be a symptom of retinal detachment. This occurs when the retina, which is the light-sensitive layer at the back of the eye, becomes separated or pulled away from its normal position. Other symptoms of retinal detachment may include the sudden appearance of floaters, a shadow or curtain-like appearance in your side vision, or a sudden decrease in vision.