Answer:
A. It relies on divine intervention to determine if an emperor acting in an upright manner.
Step-by-step explanation:
The Mandate of Heaven was established by the Zhou dynasty. The idea behind it is to the idea to explain the reason the Shang dynasty was overthrown.
The concept of Mandate of Heaven was based on the belief that it is through the power of gods that a ruler is given a divine right to rule over his subjects. However, in the event of a violation of these privileges, the gods can revoke the Mandate of heaven from such a ruler and bestow it on another.
The presence or absence of phenomena like peasant uprisings, invasions by foreign troops, drought, famine, floods, and earthquakes are divine interventions to determine if an emperor acting in an upright manner.