The goal of the experimental research strategy is to establish the existence of a. a cause-and-effect relationship between two variables.  b. a relationship between two variables.  c. no relationship...

The goal of the experimental research strategy is to establish the existence of a.

a cause-and-effect relationship between two variables.

 b. a relationship between two variables.

 c. no relationship between two variables.

d. a bi-directional relationship between two variables.