Use the Following to Answer Questions

Use the following to answer questions
-(Scenario I) In a simple correlational design,how would these data be collected?

A) Measure each participant's score on variables A and B.
B) Randomly assign participants to experience either variable A or variable B.
C) Manipulate variable A and then observe its effects on variable B.
D) Manipulate both variables A and B and observe their effects on the target behaviour of interest.