I taking the test two lol
The correct answer is "Closed Primary". A Closed Primary is a type of direct primary limited to party members that had been registered prior to the elections. The voters must declared their party affiliation before voting, which helps to avoid that members of other parties or independents affect the election. These characteristics match which the ones stated in the question, including the fact that most states use this primary system.
King John needed more money to order to carry on a war in France over disputed lands. Many of the barons believed that the dispute between John and the French king was none of their business. So, they refused to send King John knights or pay what amounted to a special tax.