What type of material can the Form 2 machine print that allows for flexibility?

The Form 2 machine is primarily designed for printing with a variety of resins, and among those, flexible resin specifically defines a material that allows for elasticity and bending. When printed, flexible resin maintains its shape while offering the ability to stretch and compress, making it suitable for applications that require pliability, such as casings, grips, or parts that need to endure repeated motion without breaking.

While standard resin and rigid plastic are suited for creating solid, non-flexible parts, and composite material provides enhanced strength or durability characteristics, they do not offer the same degree of flexibility as flexible resin. This unique property of flexible resin is what makes it the correct answer to the question regarding materials that allow for flexibility when using the Form 2 machine.