How did the citizens of ancient rome vote?
a. they voted in groups.
b. they voted as individuals.
c. citizens were not allowed to vote.
d. citizens could only vote for specific laws.

b. they voted as individuals.  

Explanation:

The Romans, like us, elected candidates for public office by secret and individual vote. At the same time, however, in voting laws in the public square, they also had a form of direct participation that resembled Athenian democracy more than the formulation of laws in our parliaments. For this reason, even though it can not define the Roman Republic as fully democratic, it contains democratic elements and has an important, and often decisive, popular participation.

a.

congress passed laws allowing for free passage between states.

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