Final answer:
The trading bloc that includes Venezuela, Brazil, and Argentina is Mercosur. The correct answer is option b.
Step-by-step explanation:
The trading bloc that includes Venezuela, Brazil, and Argentina among other countries is Mercosur (Mercado Común del Sur, or Southern Common Market). Formed in 1991, Mercosur aims to promote free trade and the fluid movement of goods, people, and currency. The founding members were Brazil, Argentina, Paraguay, and Uruguay.
Venezuela became a full member, but its status was suspended in 2017 for failing to comply with the bloc's democratic principles. Even though its application for full membership is pending, Venezuela has worked to increase sales of oil to countries within Mercosur, highlighting the importance of Mercosur as the principal trade agreement in South America.
While Mercosur is one of the most significant trade agreements in the region, other trade blocs also exist, such as the Andean Community and the relatively newer Pacific Alliance. These organizations reflect the inclination of South American nations to cooperate economically while preserving a degree of sovereignty and responding to the continent's diverse political landscapes.