The first answer would be answer c. then question 2 would be c also. the third is b
C)They allow multiple votes, from multiple voices to be heard
Political parties foster multiple elections. Most famously, the primary and general presidential elections. In the primary election the candidate that will represent each political party is voted into candidacy for the general election. In the general election voters choose between the candidate from each party to become president.
The reason for the war was that the Sparta feared the growing power and influence of the Athenian Empire.