Answer:
Simplicity, Compassion and Humility
Explanation:
Considering the woman's action presented in the question, the Taoist belief she is practicing is regarded as "Simplicity, Compassion, and Humility."
As a busy and successful woman, she volunteers at her local soup kitchen once a week shows her compassion and humility. She doesn't see herself as too high for that role. Also, for her not to share such information among any of her friends, family members, or colleagues shows how simple she is, as she doesn't consider it a big issue but rather one of the simple things we do in life.
