In general, being more emotionally stable and mature is a characteristic of which stage of adulthood? A. childhood B. young adulthood C. middle adulthood D. older adulthood

Maturity occurs in young adulthood also known as adolescence. At this stage, many chances occur physically, mentally, phsychologically, and emotionally. That means the answer to your question is B.  I hope this helps:)

I believe C- Middle adulthood. Because around this time you most likely have a job and kids. If you're going to have these things you are most likely emotionally stable and overall mature.