Explanation:

Let’s compare the countries by land area:

1. India – ~3.29 million square kilometers
2. Argentina – ~2.78 million sq km (smaller than India)
3. Canada – ~9.98 million sq km (much larger)
4. China – ~9.59 million sq km (much larger)
5. Brazil – ~8.51 million sq km (much larger)

Conclusion:

Only Argentina is smaller than India in terms of total area.
Hence, the correct answer is: (A) Argentina.