The correct answer to this open question is the following.
Based on this information, the conclusion that can be drawn about the government of Jessica's country is that Jessica lives in a country that has a Parliamentary system.
In this kind of government, the winning party has the majority of members in the Parliament, It is the Parliament which has the power to name a Primer Minister, the equivalent of a President in other democratic systems. The Parliament is the most powerful branch of government, and people vote for their representatives on Parliament. Two keep a balance of power in this system, the judiciary has oversight over the legislature.