Question

as you leave childhood behind, the ability to get and spend your own money marks your growing independence.

Explanation:

The quote is about the concept of growing independence related to money management as one leaves childhood, which can be analyzed in the context of Psychology (a subfield of Social Science) to understand developmental stages and behavioral changes, or in the Arts subfield of Literature for analyzing the thematic content of the quote. Since it's a quote with a thematic focus on personal development and money's role in independence, Psychology (Social Science) is a strong fit for analyzing the psychological aspects of growing independence.

Answer:

Psychology (Social Science)