When a team has used all substitutes, can they replace a player leaving due to concussion symptoms with another player from the lineup?

The correct answer is that a team can replace a player leaving due to concussion symptoms with another player from the lineup. This is in line with safety protocols that prioritize the health of players who may be experiencing concussion symptoms.

In NCAA regulations, if a player is unable to continue participating due to injury or health concerns such as concussions, they can be replaced without restriction regarding substitutions, provided the team is following the established health and safety protocols. The essence of the rule is to ensure that player welfare is paramount, allowing teams to secure a replacement to maintain competitive integrity while ensuring the affected player's health is prioritized.

Other options suggest restrictions that are not aligned with current guidelines regarding health-related substitutions. For instance, requiring a player to be a starter or limiting replacements based on prior participation do not reflect the intent of health-focused rules and could jeopardize player safety.