Player association — Monica Seles' primary sport Monica Seles, a multi-Grand Slam champion of the 1990s, is primarily associated with which game?

Introduction / Context:
Monica Seles is one of the most famous women in professional sport during the early 1990s. Recognizing her sport is a straightforward sports GK task.

Given Data / Assumptions:

• Name: Monica Seles.
• Known for multiple Grand Slam titles in the early 1990s.

Concept / Approach:
Grand Slam terminology most commonly refers to the four major tennis championships (Australian Open, French Open, Wimbledon, US Open). Seles won numerous majors and was world number one, making 'Tennis' the clear association.

Step-by-Step Solution:
Link 'Grand Slam champion' to the sport that uses this exact term → Tennis.Recall Seles’s dominant run in early 1990s.Select 'Tennis'.

Verification / Alternative check:
Tournament records from the WTA and Grand Slam archives show Seles as a multiple major champion.

Why Other Options Are Wrong:
Volleyball / Athletics / Badminton / Table tennis: While prestigious, they do not use the four-major 'Grand Slam' framework in the same canonical sense as tennis.

Common Pitfalls:
Confusing 'Grand Slam' across different sports. In GK, Grand Slam typically signals tennis unless otherwise specified.

Final Answer:
Tennis