Commodity money is something that used as the medium of exchange that has value in its own right. For example, gold, silver, cigarette. representative money is commodity backed money.
Biulding up wards because of new imgrants
It would be "c. Denial of the right for Congress to levy taxes" that is the best option from the list, since this aspect of the Articles made the central government very ineffective--leading to the eventual creation of the Constitution.