The correct option is B.
Explanation
The Koeppen climate classification system categorizes global climates into five major groups designated by capital letters (A, B, C, D, and E). These groups are primarily defined by temperature and precipitation characteristics.Analysis of Classification Groups:
- Group A (Tropical Humid Climates): These regions have an average temperature of the coldest month of 18°C or higher. They are characterized by high precipitation throughout the year or distinct wet seasons.
- Group B (Dry Climates): This group represents climates where potential evaporation exceeds precipitation. These regions are characterized by a constant water deficit and include arid (desert) and semi-arid (steppe) climates.
- Group C (Warm Temperate Climates): These climates have an average temperature of the coldest month between 18°C and -3°C.
- Group E (Polar Climates): These are cold climates where the average temperature of the warmest month is below 10°C.
Key Takeaway:
In Koeppen’s classification, the capital letter 'B' is the specific designation for Dry Climates, defined by a moisture deficit where evaporation rates are higher than precipitation inputs.