Best answer; topic sentence. You wouldn't know the purpose of the paragraph without knowing the topic.
The answer is B. They first appeared in the 19th century which includes the 1900's. The others are just opinion.
Plus or minus is a sports statistic used to measure a player's impact on the game,represented by the difference between their team's total scoring versus their opponent's when the player is in the game.In ice hockey,it measures a player's goal differential.