Answer:
The answer is A.
Explanation:
The player cannot take part in this match --- why? the sentence is incomplete so connected it with "because" to answer the question.
Here's a few sentences with 'a'.
Billy helped a girl find her lost cat.
Georgia found a stray cat in an alley.
Remi got a suitcase for her birthday.
A the addition to sound
the story says that to emphasize that Victor felt powerful