A) Create a tax system so all states have to pay a fair amount based on population.
C) Change the number of states required to pass laws.
D) Put trade under the national government so laws were the same for all states.
The delegates in Philadelphia had several options to consider to solve the problem of a lack of money under the Articles of Confederation. One option was to create a tax system that would require all states to pay a fair amount based on their population. This would ensure that the national government had a consistent source of revenue and could fund its operations. Another option was to change the number of states required to pass laws. Under the Articles of Confederation, Congress could not pass laws without the approval of 9 states, which made it difficult to pass important legislation. Reducing the number of states required to pass laws would make it easier for Congress to act. A third option was to put trade under the national government so that laws were the same for all states. This would prevent individual states from enacting their own trade laws, which could create confusion and conflict.