Which QUAD country has the largest economy?

Correct — B. The Quad has four members: Australia, India, Japan and the United States.

By nominal GDP the United States has the largest economy in the world, several times the size of any other Quad member's. So among the four, the USA → option (b).

Why the others are wrong

• (a)
  Japan — Japan is a large economy, but by nominal GDP the US economy is several times bigger than Japan's.
• (c)
  India — India is roughly Japan's size in nominal GDP, and like Japan it is a fraction of the US economy. India leads the Quad on population, not on GDP.
• (d)
  Australia — Australia has the smallest economy of the four Quad members by nominal GDP, below Japan and India as well as the USA.

The Quadrilateral Security Dialogue (Quad) groups Australia, India, Japan and the United States. Its stated focus is a free and open Indo-Pacific.

The standard way to compare economies is nominal GDP in US dollars, as published by the IMF. On that measure the US leads the world, and the other three Quad members trail it by a wide margin.

Key facts

• Quad members: Australia, India, Japan and the United States.
• The United States has the world's largest economy by nominal GDP.
• Australia has the smallest economy of the four Quad members by nominal GDP.

Common traps

• Ranking by population instead of economic size: India has the largest population in the Quad, the USA the largest economy.
• Getting drawn into the close Japan-India comparison when the question only needs the clear leader.

No directly related past PYQ was found.