Which of the following statements is true of both the United States and Roman Republican governments?
citizens vote directly on the laws
there is more than one legislative body
senators serve for lite
all natural bom adults are citizens with the right to vote.

Right choice is:

All natural bom adults are citizens with the right to vote.

Explanation:

Servius Tullius (578-535 BCE), the sixth king of Rome, reformed the tribal voting system of Rome. He gave the right to vote to men who were not members of the thre original tribes. The king enlarged the number of tribes and assign people to them on a geographic basis, not because of blood affinity. He aimed at increasing the tax body and the numbers of men capable for military service.

In the US today, all adult people - male and female - have the right to vote in free elections.