Sumerian priests and kings helped one another stay in power. The kings respected the priests' rights and powers. The priests declared that the gods had chosen the king to rule. Together, kings and priests created religious ceremonies that supported royal power.
I am pretty sure that three options from the list represented above are suitable for your question. Just checked the list of activies and come across these ones : discus throw, wrestling and boxing. Therefore A,B,C are the correct ones.
They standardized weights, measures, writing and standards
