Concept:Cold-blooded animals cannot control their internal body temperature; it changes with the surroundings. They include fish, reptiles, and amphibians. Warm-blooded animals (birds and mammals) keep a constant body temperature.
Explanation:- Shark belongs to class Chondrichthyes (a fish). Most fish are cold‑blooded.
- Whale is a mammal – warm‑blooded, gives live birth, and feeds young with milk.
- Eagle is a bird – warm‑blooded.
- Kangaroo is a mammal – warm‑blooded.
Therefore, only the shark is cold‑blooded.
Answer:Option C: Shark