In order to be successful, a cartel must:

a. find a way to encourage members to produce more than theywould otherwise produce.

b. agree on the total level of production for the cartel, butthey need not agree on the amount produced by each member.

c. agree on the total level of production and on the amountproduced by each member.

d. agree on the prices charged by each member, but they neednot agree on amounts produced.

c. agree on the total level of production and on the amount produced by each member.

Explanation: A cartel is a group of businesses or nations that collude to limit competition within an industry or market and in order to be successful, a cartel must agree on the total level of production and on the amount produced by each member. All cartels are reliant on the compliance of its members and is better able to maximize its profits if it behaves as a monopolist. Therefore it is extremely important to control the total production levels. However, cartel agreements are quite difficult to maintain due to constant tension between cooperation and self-interest.

answer; /// the use of a bank credit card to make purchase;