What does WSI stand for?

The term WSI stands for Water Safety Instructor. This designation is associated with individuals who have completed a specialized training program designed by the American Red Cross to teach water safety and swimming skills. The program equips instructors with the knowledge and skills needed to teach others about the importance of water safety, prevent drowning, and provide basic swimming instruction.

The focus on "Instructor" emphasizes the role these individuals play in educating others, rather than merely participating in water activities themselves. The other options, while related to water activities, do not convey the same level of formal training and instructional capability that "Water Safety Instructor" does, making it the accurate definition of WSI in this context.