W..
If I don't explain my behavior, how will my daughter know how my mind works? How will she discover critical thinking skills and learn to question her own behavior?
I think much of this might depend on "tone". My daughter can ask me just about anything. Sometimes she gets "that was an adult decision and I can tell you we both still love you and although you were not involved in the decision I understand you have felt the impact", but unless her tone is sassy, I'll answer anything she asks.
But my parenting style is to TEACH her what to do. Not simply lay down the law and breed a follower.
Every so often I pull out the, because I'm the mom and there are different rules for adults (drinking wine, for example) but these times are few and far between. And, really, even with the wine example.... I can talk about brain development, advanced judgement capability etc.