Outlet boxes can be secured to suspended-ceiling framing members by which of the following methods?

Outlet boxes must be securely fastened to suspended-ceiling framing members to ensure stability and safety. Using bolts is a reliable method that meets code requirements for securely anchoring these boxes. Bolting provides a robust connection that can withstand the mechanical stresses of wiring and any fixtures attached to the outlet box. This method ensures that the box is firmly held in place, minimizing any risk of movement or disconnection.

Nails, while a common fastening method, may not provide adequate strength or stability in the context of suspended ceilings, where a more secure anchor is necessary. Tape and stickers are not suitable options in this scenario as they do not provide the necessary strength and permanence required for electrical installations. Therefore, bolting is the method that guarantees compliance with safety standards and proper support for the outlet boxes in suspended-ceiling installations.