What should a student be able to demonstrate after learning to fin?

After learning to fin, a student should be able to create movement and maintain position, which is crucial for effective swimming with fins. This skill involves using the fins to generate propulsion in the water while also being able to control their body position. Successful finning allows a swimmer to navigate efficiently through the water, enhancing their overall performance and comfort while swimming.

The ability to create movement implies that the student can propel themselves forward and adjust their speed as necessary, while maintaining position indicates an awareness of their body’s orientation in the water, which is vital for both safety and efficiency. This skill contributes to a swimmer's ability to maneuver in various aquatic environments.

While swimming long distances, floating on their back, and diving underwater are all important swim skills, they are not specific outcomes directly associated with the use of fins. Instead, finning primarily focuses on the combination of movement and stability in the water, making option C the most relevant and accurate demonstration of what a student should achieve after learning to fin.