Koppen's 'BSh' classification represents:

Explanation

In Koppen's climate notation, B marks an arid or dry climate, S narrows it to steppe or semi-arid conditions, and h marks the hot subtype, with annual temperature above 18°C. Britannica's steppe-climate entry supports this reading by linking BSh with low-latitude semi-arid steppe regions. That is why BSh is not simply any dry climate: it is the hot semi-arid category, the type associated with parts of Rajasthan, Gujarat, the Deccan Plateau, and the Sahel. The code therefore combines moisture status, landscape-climate type, and temperature into one compact label.

Why the other options are wrong

• (B) Cold steppe climate is coded BSk, because the final k marks the colder steppe subtype rather than the hot h subtype.
• (C) Tropical rainforest is coded Af, so it belongs to the tropical rainforest group rather than the arid steppe group marked by BS.
• (D) Hot desert climate is coded BWh, where W denotes desert, not the S steppe or semi-arid category used in BSh.

Concept

This tests Koppen climate-code decoding, especially the meaning of each letter in dry-climate symbols. It recurs in RAS because Rajasthan's geography requires clear separation between desert, semi-arid, hot, and cold dry climates.

Source

• Encyclopaedia Britannica

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