Question

5 what is the main idea of this passage? a architects have begun using 3d printers to make small, realistic models of houses they design to give clients a sense of what the finished home will look like. b people are using 3d printing technology to build things from houses and medical devices to cakes and jewelry, saving time and money through the new technology. c many chefs now use 3d printing technology to create vegan steaks and burgers, saving time that the chef would usually spend assembling and cooking the meat. d a 3d printer usually uses a 3d scanner or a computer program to sketch out what the printer will create in thin layers of materials like plastic or metal.

Explanation:

To determine the main idea, we analyze each option:

• Option A focuses only on architects using 3D printers for house models, which is a narrow example, not the main idea.
• Option B states that people use 3D printing for various items (houses, medical devices, cakes, jewelry) and highlights time and money savings, which covers the broad application of 3D printing, making it the main idea.
• Option C is limited to chefs using 3D printing for vegan steaks and burgers, a specific use case, not the main idea.
• Option D explains how a 3D printer works, not the main idea of the passage's content about 3D printing applications.

Answer:

B. People are using 3D printing technology to build things from houses and medical devices to cakes and jewelry, saving time and money through the new technology.