Concept:Köppen’s climate classification uses letter groups where type C represents mild mid-latitude (warm temperate) climates.
Explanation:In Köppen’s system, climates are divided into main groups: A (tropical), B (dry), C (warm temperate), D (continental), and E (polar).
Type C includes climates such as Mediterranean, humid subtropical, and marine west coast.
These climates have mild winters and warm summers, so they are described as warm temperate climates.
Therefore, the option that matches Köppen’s type C is "warm temperate."
Answer:A. warm temperate