What is the highest active volcano on Earth, located on the border between Argentina and Chile in the Andes?

Answer and explanation

Correct answer: A. Nevado Ojos del Salado (6,893 m)

  1. Step 1: Nevado Ojos del Salado rises to 6,893 meters (22,615 feet) in the Atacama Desert region.
  2. Step 2: It is the second-highest peak in the Western Hemisphere after Aconcagua and retains fumarolic gas activity, confirming its status as the world's highest active volcano.
Answer
Nevado Ojos del Salado (6,893 m)
Why not the others: 'Cotopaxi' is often popularly cited but is a thousand meters lower; 'Mount Kilimanjaro' is in Tanzania; 'Mount Rainier' is in Washington State.

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