Can somebody help me pleaseee i will give BRAINLIST

In which figure is de bc ? a. figure 1 b. figure 2 c. figure 3 d. figure 4

What is the name used to describe a graph where for some value of x, there exists 2 or more different values of y?

Of the ones listed here, the factor that had the greatest impact on the eventual destruction of native americans' ways of life was the development of the a) automobile. b) highway. c) railroad. d) steamboat.