Which of the following is commonly used to join materials together in construction?

In construction, pins are commonly used as fastening devices to join materials together. They provide a strong mechanical connection that ensures stability and alignment between components. Pins can come in various forms, such as dowel pins, cotter pins, and clevis pins, each suited for specific applications. Their ease of installation and removal makes them ideal for temporary and permanent assemblies in a variety of structural settings.

Other options like bulbs and seals do not serve the primary function of joining materials together. Bulbs could refer to decorative elements or lighting, while seals are typically used for weatherproofing or providing a barrier against elements rather than for mechanical fastening. The term "fuse" generally refers to methods that involve melting or soldering, which differ from the mechanical joining processes associated with pins. Thus, pins are the most appropriate choice for joining materials in construction.