Answer:
A) invest more in the relationship with Jack and try to forget about Ted
Step-by-step explanation:
inthe social exchange theory, people tend to ceate a cost benifit analysis to figure out what would benefit them the most.
In the above situation, Carla does the same and decides to stick with Jack and invest more. Because on the contrary, if she breaks off with Jack, and initiates with Ted, it would involve a lot of risk , would require more effort by carla, and she would go through emotional turmoil due to breaking up and patching up with new partner, not to mention risk involved with Ted due to the possibility of him being different from what Carla judged him to be.