The correct option is B Coastal area.
Both land as well as sea, starts cooling down when the sun sets. As heat capacity of land is lower than sea, it cools down quickly. Thus, a low-pressure situation develops over the sea as temperature above it is higher when compared to land. Due to this, air flows from land to sea during the night. Similarly, sea breeze is one that blows from sea to land in consequence of this differential heating during the daytime. Due to this, coastal areas have moderate temperature and climate remains almost same throughout the year.