Option 3: (D), (C), (A), (B) -> Forms: "Arctic foxes, adapted to the harsh Arctic winter, stay warm with thick fur, insulated feet, and fluffy tails, while their white coats provide camouflage from predators and help them silently approach prey" - grammatically correct and logically coherent sentence with proper subject introduction, main clause, and contrasting clause.
Hence, Option 3: (D), (C), (A), (B) -> The sentence correctly begins with the subject (arctic foxes) and its descriptor, follows with the main action (staying warm), then uses "while" to introduce a contrasting/additional feature (white coats for camouflage), creating a well-structured complex sentence that describes arctic fox adaptations -> correct