The white Dwarfs are a group of stars that are- A)Extremely bright and hot
B)Low in brightness but are average to high in temperature
C)Average in brightness but high in temperature
D)Average in brightness and average in temperature

An engineer decides to use a slightly weaker material rather than a stronger material, since she knows that the stronger material can break suddenly. this is an example of what? a choosing a material that will show warning before it fails b using composite materials that combine strength c using a material for multiple applications d using design techniques that increase efficiency and reduce cost