Final answer:
Nintendo uses third-party games to expand their game library and offer a wider range of choices to players, thereby attracting a broader audience and maintaining a competitive advantage in the gaming market.
Step-by-step explanation:
Nintendo and other large companies often use third-party games as a strategy to expand their game library and offer more choices to players. This is crucial because it allows the company to attract a broader audience by providing a diverse range of games that cater to different interests and preferences. The correct answer to why a company like Nintendo would use third-party games is c) To expand their game library and offer more choices to players. This strategy is supportive rather than anticompetitive, as it enables the company to offer a wide variety of experiences to consumers, which can be a competitive advantage in the diverse and fast-evolving gaming market.