Which pair of variables has a clear casual link between the two named variables

Answer this question only if you know the answer! 30 points and

9/10 divide by -3/15 as a mixed number

Fred has a spinner that is split into four equal sections: red, blue, green, and yellow. fred spun the spinner 688 times. which of the following would be a good estimate of the number of times the spinner lands on the green section? a. 269 b. 603 c. 344 d. 189