A — Nagercoil to Madurai
The largest wind farm cluster in India is located in Tamil Nadu from Nagercoil to Madurai.
The passage under "Wind power" explicitly states: "The largest wind farm cluster is located in Tamil Nadu from Nagarcoil to Madurai." Option A is correct. Note the slight spelling variation (Nagarcoil/Nagercoil) — both are accepted; use Nagarcoil (official spelling) in descriptive answers.