For a technology project, Kyle came up with an idea to build a model bridge. He wants his bridge to span 50 cm and to support a 1 kg object. According to the engineering design process, which of the following should be Kyle's next step? Select from the following.
a). construct prototypes of different kinds of bridges;
b). research the different designs of bridges;
c). gather the materials needed to build the bridge;
d). make a drawing to show how to build the bridge;
b).