Belgium's Production Possibilities Frontier (PPF) graph showing the trade-off between mussel and fry production, with labeled points A, B, C, and D.
Graph showing Belgium's Production Possibilities Frontier (PPF) with points A, B, C, and D, illustrating the trade-off between mussel and fry production. The x-axis represents mussels (in millions), and the y-axis represents fries (in millions). Points are plotted at A (0, 28), B (2, 20), C (4, 12), and D (6, 4), connected to form a downward-sloping curve.