Question: What are the most popular sports in usa?
Disambiguated questions and answers: question: What is the most popular sport in the USA to participate in?
What is the most popular sport in the USA to watch?
What is the most popular sports league in the USA to watch in person?
answer: Exercise walking
football
Major League Baseball
Natural Questions answer: basketball
Football
baseball
soccer (from the Wikipedia article "Sports in the United States")