If we know that there is a linear cause-and-effect relationship between x and y, what are we likely to see on a scatter diagram of x vs. y?

Group of answer choices

(a) A curved line.

(b) A straight line.

(c) Points which show a pattern of linear relationship.

(d) Predictors of other linear process variables (i.e., x2 , x3 , x4 , . . .)