Based on the provided description of the map, Climate A, which covers most of Saudi Arabia, Oman, Yemen, and a section of Iran, is likely arid, as these regions are known for their dry conditions. Climate B, located in Turkey near the mountains, is likely highland due to the elevation.
Climate C, which covers the middle of Turkey and stretches into Iran, aligns more closely with semi-arid or Mediterranean climates. However, considering that the interiors of both the Iranian Plateau and the Anatolian Peninsula generally feature more arid to semi-arid conditions rather than Mediterranean or highland climates, the predominant climate type for these regions can be inferred.
If we analyze the majority coverage again, the answer is:
B. semi-arid
Semi-arid conditions are common in the inland areas of both the Iranian Plateau and the Anatolian Peninsula.