The correct answer is "indicated that a strong, constitutionally designed national government was needed to protect property and maintain order."
The importance of Shays' Rebellion to the development of the United States Constitution was that it indicated that a strong, constitutionally designed national government was needed to protect property and maintain order.
Let's have in mind that the Articles of Confederation had left a weak central government in the hands of Congress that basically was not able to do something important. Why? Because the states were free and sovereign and could collect money through taxation. Congress couldn't. If Congress needed money, it had to ask for it from the states. The central government couldn't raise an army.
So after the Shay's Rebellion led by Daniel Shay in which rebels attacked courts and other public buildings in Boston, Massachusetts, Americans realized the need for a strong federal government that could have the power to act in this and other important situations.