Final answer:
A person with too much yang energy is likely to rush into things more often, while too much yin may make one calm and thoughtful. Understanding yin and yang is important as it emphasizes the need for balance in all aspects of life, rather than denigrating one side as inferior to the other, as historically done in the context of gender in Chinese philosophy.
Step-by-step explanation:
The levels of yin and yang in excess or true heat refer to the balance of energies within traditional Chinese philosophy and medicine. These terms have been historically associated with opposite principles such as dark and light or male and female. In cases of excess yang, which is characterized by activity and heat, a person may exhibit behaviors that reflect overactivity, such as rushing into things more often (response C). In contrast, excess yin, associated with inactivity and cold, might result in excessive calmness or thoughtfulness (response A).
You should know your yin from your yang because every aspect of our lives ought to be balanced (response A). The belief in balance opposes the historical denigration of yin as inferior to yang, which in Han dynasty thought was associated with passive, emotional, and greedy attributes typically mapped onto women, thus transforming the complementarity of yin and yang into a hierarchy with yang on top.