Which organization was responsible for electing the most important officials in the roman republic?

a.
the roman senate
b.
the roman army
c.
the assembly of the tribes
d.
the assembly of the centuries

Will give brainliest asaapppppppppppp plz im in a major hurry to finish which of these pairs of objects exerts the greatest gravitational force on each other? object 1 and object 3 object 4 and object 3 object 1 and object 4 object 4 and object 2