Question

what sport was used as a detailed example of how professional - class athletes may come the united states to participate in professional sports?
a baseball.
b basketball.
c soccer (aka, football in most international venues).
d beach volleyball.

Explanation:

Baseball has a long - standing history of international players coming to the United States to play in its professional leagues. Many talented baseball players from countries like the Dominican Republic, Japan, etc., have joined Major League Baseball (MLB) teams. Basketball (NBA) also has international players, but baseball was more historically prominent in this regard in terms of being a detailed example for such a phenomenon. Soccer (MLS) and beach volleyball (AVP) have international participation too, but not as strongly associated with this particular detailed example as baseball.

Answer:

A. Baseball.