Final answer:
Argentina's strategy to raise prices by withholding their goods would be most effective if they hold a monopoly on the goods or resources to make them.
Step-by-step explanation:
Argentina's decision to withhold their goods from international markets in order to raise prices would be most effective if they hold a monopoly on the goods or resources to make them. By having exclusive control over the supply, Argentina can manipulate the market and dictate higher prices. This strategy would be less effective if Argentina has been offered low-interest loans by foreign banks, supports the expansion of substitute goods, or provides domestic manufacturers with tax breaks.