What is indicated about proof of legal nationality regarding a player's right to play for a national team?

The correct answer highlights that proof of legal nationality alone does not guarantee a player's eligibility to play for a national team. Eligibility is a more nuanced concept that incorporates several factors linked not only to nationality but also to residency, age, and adherence to specific regulations established by governing bodies.

For instance, a player might possess the correct documents proving their nationality but might still be deemed ineligible due to factors like not meeting residency requirements or having previously played for another national team in a competitive context. Thus, while legal nationality is a critical aspect of representing a country, it is just one component of a broader eligibility framework.

Understanding this distinction is essential for agents and players alike, as it highlights the complexities involved in international basketball play and the regulations set forth by FIBA and other authorities.