54.
Your Answer is
Correct Answer is F
Explanation
The previous sentence indicates that in this game, players have to do something to keep the score from exceeding three digits in the early stages.
The next sentence expresses a rule that when any fielder lifts the ball over his head, the opposing runner must stop. This sentence is to explain the part of do something to keep the score from reaching triple digits in the previous sentence, so the preceding and following sentences are causal.