Which statements correctly describe rivers in arid regions?

The correct option is Rivers often dry up seasonally.

Explanation:

Arid regions are characterized by extremely low rainfall, high temperatures, and high rates of evaporation. Because atmospheric moisture and local precipitation in these areas are minimal, rivers in arid regions often do not receive a continuous water supply throughout the year.

Many of these rivers are ephemeral or intermittent, meaning they flow primarily during or immediately after rare rainfall events or rainy seasons. During dry periods, water levels decrease rapidly, causing the rivers to dry up seasonally. In contrast, perennial rivers (which flow year-round) are rare in arid climates unless they originate in wetter regions outside the desert (exotic rivers like the Nile).