Question

4 the author says that 3d printers are being used to ice cakes and make plant - based burgers and steaks. what does this tell you about the kinds of materials used by 3d printers? a 3d printers are best at building things in concrete and metal. b 3d printers can print in many different materials, including food. c 3d printers can easily break if softer materials are used in them. d 3d printers can only print very large objects in outdoor spaces.

Explanation:

The question is about inferring the types of materials 3D printers use based on the examples (icing cakes, making plant - based burgers/steaks). Option A is incorrect as the examples are food - related, not concrete/metal. Option C has no support from the passage. Option D is wrong as the examples don't involve large outdoor objects. Option B is correct because using 3D printers for food (icing, plant - based burgers/steaks) shows they can work with different materials including food.

Answer:

B. 3D printers can print in many different materials, including food.