Which of the following is a method to correct vision while diving?

Changing mask lenses is a recognized method to correct vision while diving. This is particularly beneficial for divers who require vision correction but still want to enjoy underwater activities. Prescription lenses can be incorporated into a dive mask, allowing divers to see clearly while submerged. This adaptation can enhance safety and enjoyment, as good vision is crucial for navigation and identifying marine life.

In contrast, using a snorkel does not address vision issues, as it is primarily a breathing apparatus that allows the diver to inhale air while keeping their face submerged. Wearing goggles, while they may provide some vision correction, is not an appropriate method for diving since they typically do not create a proper seal and are not designed for underwater pressure. Using full foot fins relates to propulsion while diving and also does not contribute to correcting vision. Thus, changing mask lenses stands out as the correct approach for vision correction in a diving context.