Which of the following can be flash-cured?

Flash-curing refers to the process of quickly curing a product, typically using a UV or LED light. Sculpting gel is designed specifically for quick curing, allowing nail technicians to shape and set the gel into hard forms more efficiently. This feature makes sculpting gel a popular choice for nail enhancements, as it can simultaneously provide strength and flexibility while allowing for adjustments during the application process.

In the context of other materials mentioned, liquid acrylic requires a curing time that typically involves a chemical reaction with a catalyst, and it does not cure under UV or LED light. Similarly, fiberglass and silk wraps rely on resin systems that must air-dry or be cured through different means, rather than through flash-curing methods. Therefore, sculpting gel stands out as the correct choice capable of being flash-cured.