Final answer:
The paragraph contributes to the author's argument by illustrating her experience as a TCK and the challenges of relating that experience to others.
Step-by-step explanation:
This paragraph contributes to the author's argument by illustrating her experience as a TCK (Third Culture Kid) and the challenges of relating that experience to others. The author mentions how she tells different versions of her story depending on the person and situation, emphasizing the complexity of her background and the difficulty in explaining it succinctly. This highlights the unique struggles that TCKs face in terms of identity and belonging.