How many colors is the MK20 mask available in?

The MK20 mask is available in three distinct colors, which are typically chosen to accommodate various diving environments and personal preferences. Offering multiple color options is beneficial for divers as it allows for better personalization and can enhance visibility underwater in certain conditions. The availability of three colors reflects the design and functionality principles of diving equipment, where both practicality and diver aesthetics are considered. This variety can also be useful for teams or organizations that prefer specific colors for identification or uniformity during dives. Therefore, the correct answer highlights the mask's diverse options that cater to the preferences and needs of users.