Which situation demonstrates the use of jealousy as a tactic to achieve relational rewards?

A) Toni cheated on Lance,so Lance decided to cheat on Toni.
B) Leif flirts with others because it makes his partner feel uncertain,and boosts his self-esteem.
C) Giles is ignoring his girlfriend because he is upset with her.
D) Dez posts photos on social media of herself with other guys to make everyone think she is popular.

Which element of interpersonal attraction is most likely to be a source of long-term maintenance attraction rather than one of short-term initial attraction?

A) physical attraction
B) charisma
C) proximity
D) attitude similarity