Tyler and Ryan have recently divorced and Tyler is now getting remarried. Which of the following of their children is most likely to be negatively impacted by this remarriage and getting a new step-parent.
a. Trisha who is 18 and is leaving for college
b. Macy who is 16 and is becoming more autonomous
c. Sally who is 12 and just reaching adolescence
d. Tracy who is 15 and requires less parent