The roommate of Jill.
In the context of predicting our behavior, Jill's roommate is most likely to make the best prediction of how long Jill's relationship will last.
Explanation:
It has been proven through researches and seen generally that people who are most closed to someone can make the best guess about their personalities, their nature and the behaviors they depict in different situations.
So when Jill comes in a new relationship after breaking a relationship of six months, the duration of her current relationship can be best predicted by her roommate who lives with her and spend most of the time with her. She is the one who knows
So Jill's roommate will make the most accurate guess about how long her new relationship will last.
Learn more about relationships at:
https://brainly.com/question/12079167
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