Which option makes it easier for participants to maintain proper alignment when adding variety to arm patterns?

Floating the arms on the surface of the water provides a supportive and buoyant environment that helps participants maintain proper alignment while performing various arm patterns. When the arms are floating, they are more naturally buoyed, allowing individuals to focus on their core stability and overall body alignment without overexerting themselves. This buoyancy helps mitigate the effects of gravity, reducing strain on the muscles and joints, which can often lead to misalignment.

In contrast, rotating the arms in circles can lead to increased complexity in movement, which may distract participants from focusing on alignment. Extending the arms fully, while it allows a broader range of motion, can create tension and may lead to instability if participants do not have proper control. Keeping the arms still could limit the variety of movements and may not engage the participant as effectively, potentially hindering their ability to maintain aligned posture throughout various exercises.