How was using the mandate of heaven as a basis for political power dangerous to zhou rulers?

The Zhou dynasty was the longest lasting of the Chinese Empire's dynasties. It lasted from 1046 to 256 BCE. Many cultural and intellectual developments happened during this period. The works of the renown philosopher Confucius occurred during the Zhou Dynasty.

Chinese rulers were believed to have a "higher power". The Zhou claimed that their predecessors: The Shang had lost the "Mandate of Heaven" due to their numerous mistakes while ruling the empire. As a result, the Zhou were cautious of relating themselves to any sort of "Higher Power", as other forces could depose them under the same argument that the Shang were removed from power.  

the section of the chart that represents a point at which a bill needs approval from a majority of people in both chambers to advance is j, as this is the only section before the bill becomes law which has both rows (symbolizing the chambers) converging into one, meaning that the two parts of the congress have to approve of it before it can march on with the process.

its c not d   tell me if that´s correct