For which one of the following, is Satara well-known?

Answer: (b) Wind energy plant

Satara’s windy Western Ghats plateau hosts some of India’s biggest early wind farms.

The idea

Wind turbines use the motion of air rather than heat from a fuel. Exposed ridges and plateaus can give strong, sustained winds. A district can contain both wind and hydropower sites, so “well-known for” asks for the intended local association rather than exclusive occurrence.

Pressure differences drive wind → Terrain channels or exposes the airflow → Wind turns turbine blades → Rotor drives the generator → Electricity is supplied to the grid

Why the others are wrong

(a) Satara has no notable thermal plant.

(c) Koyna hydro is in Satara district too — a strong alternative.

The trap

Koyna dam lies in Satara district, which makes (c) arguable.

Also know

Chalkewadi and Vankusawade are Satara-area wind anchors. Muppandal in Tamil Nadu benefits from the Aralvaimozhi wind corridor. Koyna is a hydropower project in Satara district, showing why district-wide energy labels can overlap.