Solution

D: The G20, or Group of Twenty, is an international forum comprising the world's major economies and central bank governors: This sentence introduces the topic of the G20, explaining what it is and who it involves. C: It was established in 1999 in response to the financial crises of the late 1990s: This sentence provides historical context by mentioning the reason for the establishment of the G20, which was a response to financial crises. A: The G20 brings together leaders and policymakers to discuss global economic issues, financial stability, and sustainable development: This sentence elaborates on the purpose of the G20, which is to bring leaders and policymakers together for discussions on economic issues, stability, and sustainable development. B: It includes both developed and emerging economies, playing a crucial role in fostering international cooperation and addressing global challenges: This sentence further explains the composition of the G20, including both developed and emerging economies. It also highlights the G20's role in fostering international cooperation and addressing global challenges. E: Fostering international cooperation and addressing global challenges: This sentence serves as a concluding statement, summarizing the role of the G20 in promoting cooperation and addressing challenges on a global scale.