Final answer:
China benefits from keeping its currency inflexible by promoting economic stability.
Step-by-step explanation:
China benefits from keeping its currency inflexible because it promotes economic stability, which is option A. When a country keeps its currency inflexible, it helps minimize the risk of exchange rate fluctuations, which in turn encourages domestic and international competition. While an inflexible currency may not directly lead to increased exports, lower inflation, or improved global relations, it can contribute to a stable economic environment that may indirectly support these goals.