Answer:
A) His stress is mostly psychological, and he should find something fun to do until the game.
Step-by-step explanation:
Liam is suffering from stage fright because he believes that a scout will be present during the game and it is really important for him to perform well tonight. It is a similar feeling to what actors and actresses feel before performing on stage, specially during the first presentation.
He should try to loosen up because his performance might be negatively affected by it. Our mind sometimes can trick us into believing that we are better than we actually are or that we are not as good as we are, and that feeling of frustration doesn't have anything to do with Liam's physical conditional or even his abilities, but he needs to control them.