Find out which underlined part of the following sentences has an error. "An" exchange rate is the "price" of one "currencies" in terms of "another"

Question

Find out which underlined part of the following sentences has an error.  "An" exchange rate is the "price" of one "currencies" in terms of "another"

Satt Academy · Accepted Answer

currencies - Insidious -  (গোপনে; চুপিসাবে) হলো সঠিক উত্তর। প্রথম পর্যায়ে কোনো লক্ষণ ছাড়া রোগটি গোপনে বিস্তার লাভ করে।