3D Printer Use Welcome! You are encouraged to register with the site and login (for free). When you register, you support the site and your question history is saved.Because they can craft objects of a new design without having extrusion fittings custom-designed for that purpose, 3D printers have an application in building prototypes of new models of objects long before those new models are on production lines, and it was on this basis that they first captured the interest of the market. However, suitability for prototyping does not limit 3D printers to prototyping, and in fact their capability to craft items without specialized fittings for each design can allow them, in essence, to be the production line. 3D printers have this natural application to mass-production in part because they can produce items at a cost competitive with that of production lines.In the argument given, the two portions in boldface play which of the following roles? The first and the second each describe evidence that has been used to challenge the position that the argument seeks to establish. The first is evidence that forms the basis for an objection to the position that the argument seeks to establish; the second is that position. The first is evidence that forms the basis for an objection to the position that the argument seeks to establish; the second is a consideration that is introduced to counter the force of that evidence. The first and the second each provide evidence in support of the position that the argument seeks to establish. The first provides evidence in support of the position that the argument seeks to establish; the second is that position. Review Answer