The correct answer is the US Dollar. The Qatar Central Bank has maintained a fixed peg of the Qatari Riyal to the US Dollar for decades, currently set at approximately 3.64 Riyals per Dollar, a rate held stable to provide predictability for Qatar's oil and liquefied natural gas exports, which are priced internationally in dollars. This dollar-peg approach is shared by nearly every Gulf Cooperation Council member, including Saudi Arabia, the UAE, Bahrain and Oman, because it reduces currency-risk for hydrocarbon revenues and supports investor confidence in sovereign wealth activity. The Euro, the first distractor, is not used as a peg currency by Qatar; while Qatar maintains substantial trade and investment ties with the European Union, its monetary anchor remains the dollar rather than the European single currency. The British Pound, the second distractor, was historically relevant when Gulf sheikhdoms including Qatar used the Gulf rupee and later pound-linked arrangements prior to full independence in 1971, but this arrangement was abandoned decades ago in favour of the dollar peg once Qatar established its own currency. The Saudi Riyal, the third distractor, is Saudi Arabia's own currency and is itself separately pegged to the US Dollar, meaning Qatar's currency is not pegged to another Gulf currency but rather both nations independently peg to the same dollar anchor, a subtle distinction exam-setters exploit to test careful reading. A common confusion is assuming that because Gulf currencies are pegged to each other given their historically stable relative exchange rates, when in fact each is independently pegged to the dollar, which merely produces a stable cross-rate between them as a side effect. The revision takeaway is to remember that the anchor currency for essentially all GCC states, Qatar included, is the US Dollar, not another regional currency.
