Final answer:
Glass spacers can be used to create the necessary airspace between the art and glazing materials.
Step-by-step explanation:
The correct option to create the necessary airspace between the art and glazing materials is b) Glass spacers. Glass spacers are small strips or pieces of glass that are placed between the artwork and the glazing, such as glass or acrylic. These spacers help create a gap or airspace to prevent the art from coming in direct contact with the glazing material, which can cause damage over time.
Other options given, such as a) Fillet, c) Matting, and d) Foamcore, are not suitable for creating airspace between the art and glazing materials. Fillet is a decorative molding used to enhance the appearance of a frame; matting is used to give a border and visual separation between the artwork and the frame; and foamcore is a lightweight board often used as a backing material in framing. While these options may serve other purposes in framing, they do not create the necessary airspace between the art and glazing.
Therefore, the correct answer is Glass spacers.