Final answer:
A mosaic would most likely be utilized for its decorative appeal as a protective barrier.
Step-by-step explanation:
The protective barrier that would most likely be utilized for its decorative appeal is a mosaic. Mosaics have been used throughout history to decorate various surfaces, including floors, walls, and ceilings. They consist of small pieces of stone, glass, or other materials arranged to create intricate designs and patterns. Mosaics can serve both a decorative and functional purpose, adding beauty to a space while also providing a protective covering.