Please choose the correct answer to the question: 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?

Answer1: construct prototypes of different kinds of bridges Answer2: research the different designs of bridges Answer3: gather the materials needed to build the bridge Answer4: make a drawing to show how to build the bridge

Answer format: answer1/answer2/answer3/answer4