Read the information in the box about the fictional country of atlantica and then answer the question that follows.

every two years, atlantica holds a national election in which all citizens over the age of eighteen are required to participate. on their ballots, the citizens of atlantica vote for the political party they believe best represents their interests. based on the proportion of the vote that each party receives, the parties then appoint delegates to atlantica’s house of atlantis, which creates atlantica's laws. during the first session after an election, the house of atlantis elects one member to be the first atlantian for a term of two years. the first atlantian is responsible for enforcing the laws passed by the house of atlantis and for negotiating treaties with other countries.

based on the information provided, what type of government does atlantica have?

a. a parliamentary oligarchy

b. a parliamentary democracy

c. a presidential oligarchy

d. a presidential democracy