Most roman citizens count not vote and were taxed heavily​

The Riches from Conquests Allowed for Tax Free Living

The Riches from Conquests Allowed for Tax Free Living Gains such as the silver and gold mines in Hispania created an excellent source of revenue for the state, and a much larger tax base through its provincial residents.

Explanation:

Electorate and turnout. Voting for most offices was open to all full Roman citizens, a group that excluded women, slaves and originally those living outside of Rome. In the early Republic, the electorate would have been small, but as Rome grew it expanded.

answer; (d) all of the above; 100%

answer; because they must appeal to a broad cross-section of the population;