What can cloud seeding cause?

Cloud seeding is a weather modification technique that involves introducing substances into the atmosphere to encourage precipitation. The materials used in cloud seeding, such as silver iodide or sodium chloride, act as nuclei around which moisture can condense. As a result, clouds that might otherwise not produce rain can be stimulated to do so, making it possible for precipitation to occur from clouds that are typically dry or non-precipitating.

This mechanism explains why the first choice is correct: cloud seeding can induce rainfall from clouds that might not generate it under normal conditions. In contrast, the other options address different effects of cloud seeding or conditions that are not typically facilitated by this technique. For instance, while cloud seeding may influence the timing and distribution of rain, its primary function is to create precipitation from previously unproductive clouds.