How many inward transfers of players under 18 can be approved for one national federation within a year?

The correct answer indicates that a national federation can approve up to 20 inward transfers of players under 18 within a year. This is an important regulation set by FIBA to ensure the development and protection of young players. By limiting the number of transfers, FIBA aims to maintain a balance between fostering talent and preventing the exploitation of youth players.

This restriction allows national federations to monitor and manage the movement of young athletes more effectively, ensuring that they receive proper development and support in their new environments. The limit also serves to discourage excessive transfers that could harm the players' growth and integration within a new team or community.

The other options represent higher numbers of transfers that would conflict with this regulatory framework aimed at protecting youth players and ensuring their sustained development within the sport. The set limit is part of FIBA's broader objectives regarding player welfare and the ethical management of sports.