Final answer:
An example of heightened intercultural competence is Lee wearing a long skirt to respect the cultural practices of a religious ceremony she attends with a friend.
Step-by-step explanation:
Of the interpersonal relationship examples given, the one that shows the effects of heightened intercultural competence is: Although she normally doesn't dress in this fashion, Lee wears a long skirt as a sign of respect to attend a religious ceremony with her friend. This example highlights an individual's understanding and respect for cultural practices that differ from their own, an essential aspect of intercultural competence. Lee's willingness to adapt her dressing style to conform to the cultural expectations of the religious ceremony demonstrates an appreciation for cultural diversity and the importance of respecting cultural norms.