The correct option is (c).
Explanation
Landforms such as mountains, plateaus, and plains possess distinct physical characteristics that determine their economic utility and suitability for human activities.
- Statement 1 is Incorrect: Mountains are highly suitable for hydro-electricity generation rather than unsuitable. The steep slopes and high gradients found in mountainous regions create rapid water flow and natural waterfalls, which are ideal conditions for harnessing hydroelectric power.
- Statement 2 is Correct: Plateaus are typically rich in mineral deposits. Many plateaus are formed from ancient crystalline rocks that contain valuable minerals such as iron, manganese, and coal. For instance, the Chota Nagpur Plateau in India is a significant storehouse of minerals, and the African Plateau is known for gold and diamond deposits.
- Statement 3 is Correct: Plains are considered the most useful areas for human habitation. They provide flat land which facilitates the construction of buildings, transport networks (roads and railways), and industrial infrastructure. Furthermore, plains often possess fertile soils (such as alluvial deposits) that support intensive agriculture, enabling them to sustain high population densities.
Key Takeaway: Each major landform serves a distinct economic function: mountains are crucial for water resources and hydroelectricity, plateaus act as mineral reserves, and plains are the primary centers for agriculture and settlement.