The biennial golf tournament between the USA and Europe is the Ryder Cup, a highly esteemed international team competition in golf, alternating venues between the USA and Europe.
The biennial golf tournament between the USA and Europe you are referring to is the Ryder Cup. This prestigious event pits teams from the United States and Europe against each other and is one of golf's most famous international team competitions. It was first contested in 1927 and is named after the English businessman Samuel Ryder who donated the trophy. The competition occurs every two years, with the venue alternating between courses in the USA and Europe.
In contrast, the Presidents Cup is a tournament between the USA and an international team representing the rest of the world excluding Europe, and the Solheim Cup is a similar format to the Ryder Cup but for women's golf. The Walker Cup is also a biennial event, but it features amateur players from the USA against a team from Great Britain and Ireland.
Therefore, the correct answer is A) Ryder Cup.