Concept:The passage describes the chain of effects when plants lack sunlight. Each part logically follows from the previous one: from the basic need of light for photosynthesis, to the result of no food, then visible symptoms, and finally the death of the plant.
Explanation:Start with part P: "Photosynthesis needs light." This directly explains why sunlight is essential for plants.
Next, part Q: "No food is made without it." This continues the idea – without light, photosynthesis cannot produce food.
Then, part R: "Leaves turn yellow without it." This shows a visible sign of food shortage (chlorosis).
Finally, part S: "The plant dies slowly." This is the ultimate consequence of prolonged lack of sunlight.
Thus, the logical sequence is P → Q → R → S, which matches option PQRS.
Answer:Option C (PQRS)