Long-term low rainfall in a region may indicate which climatic condition?

Correct answer: Dry climate

Direct answer: B, dry climate. A climate is judged from repeated conditions over a long period, not from one unusual day. Rainfall is an important climatic element. If a region receives little rain for many years, it usually has a dry or arid climate, especially when evaporation is also high. Option A is wrong because humid climates generally have abundant moisture and often higher rainfall. Option B is correct because long-term low rainfall is a basic sign of dryness. Option C is wrong because a marine flood is an event or hazard, not a climatic classification. Option D is wrong because “glacial explosion” is not a standard climatic condition. The reasoning is: long period plus low rainfall equals a likely dry climate. It does not mean every day must be rainless; it means the long-term average is low. Memory cue: low long-term rain suggests dry climate; high long-term moisture suggests humid climate.