Answer-I. A number of countries, including India, are now earned (A) the use of other currencies to avoid (...

At A, the present participle of the verb is suitable. P and R could fit at A, but earned is correct only at R. So, A-R can be exchanged. B is correct. C can be exchanged with P. I. A number of countries, including India, are now considering the use of other currencies to avoid the U.S. dollar and its hegemonic role in settling international transactions. II. As for India, currency hierarchy goes back to colonial times when the Indian rupee was virtually linked to the British pound rather than to gold which it earned through exports.