Final answer:
The missing preposition in the sentence is 'with'. Kim often jokes with her high-pitched voice.
Step-by-step explanation:
Kim often jokes with her high-pitched voice.
In this sentence, the missing preposition is with. The preposition 'with' is used to indicate the instrument or means by which someone does something. In this case, it shows that Kim uses her high-pitched voice to joke.
Kim often jokes about her high-pitched voice, embracing the playful banter that surrounds this distinctive trait. She finds humor in the good-natured teasing from friends and often shares amusing anecdotes, turning what some might consider a vulnerability into a source of levity.
Through these jokes, Kim fosters a lighthearted atmosphere and demonstrates a resilient spirit. Her ability to laugh about herself showcases a healthy sense of self-awareness and an acceptance of her uniqueness.
In doing so, Kim creates connections through shared laughter, turning what could be perceived as a potential insecurity into a charming aspect of her personality.