The correct option is (c).
Explanation
Rainfall is a primary form of liquid precipitation and a crucial component of the hydrological cycle, responsible for distributing fresh water across the Earth's surface.
- Statement 1 is incorrect: Rainfall is not harmful; it is essential for the survival of plants and animals. It provides the water required for photosynthesis in plants and hydration for animals. While excessive rainfall can lead to floods and destruction, the phenomenon of rainfall itself is a fundamental requirement for life on land.
- Statement 2 is correct: Rainfall is the main mechanism that brings fresh water to the Earth's surface. It replenishes groundwater tables, rivers, and lakes, making water available for consumption and agriculture.
- Statement 3 is correct: The absence or significant deficiency of rainfall over an extended period leads to water scarcity, resulting in droughts. Conversely, excessive rainfall can lead to floods.
Key Takeaway: Rainfall is the primary source of fresh water on Earth and is vital for ecological balance; its scarcity causes droughts, whereas its excess causes floods.