The answer is: A. Shays' Rebellion exposed the weakness of the central government as written in the Articles of Confederation.
Shay's rebellion is caused by farmers in Massachusetts who were unhappy about the decision from the central government at that time.
The articles of confederation stated that the government should be structure in a way that enable it to maintain law and order in this country. The rebellion opened up the fact that the central government at that time could not maintain the peaceful order.