A. Liaodong Bay (correct answer)

B. Bohai Bay

C. Laizhou Bay

D. North Yellow Sea

The temperature of seawater depends on its heat budget. Generally, from low latitude to high latitude, the surface seawater temperature gradually decreases; The temperature of seawater decreases with the increase of depth. Liaodong Bay, located in the north of Bohai Sea, is the highest latitude bay in China, close to the source of winter wind. Every winter, it is most affected by the northwest wind and becomes a low temperature center. A large amount of fresh water from Liaohe River flows in, so sea ice is the most serious.