The correct answer is "Provide for the common defence".
In order to secure the rights that are in the Declaration of Independence, the U. S. Constitution organize a government to "establish Justice, insure domestic Tranquility, provide for the common defence, promote the general Welfare, and secure the Blessings of Liberty to ourselves and our Posterity.”
"Provide for the common defence" states that the government should work to protect the country from its enemies. This means that only the federal government is responsible for the protection of the country, its citizens, and property.