A developing country is struck by a devastating earthquake. Though the country is not a U.S. ally, the president of the United States orders millions of dollars worth of food, medicine, and supplies to be sent to the country. While no U.S. officials play a direct role in rebuilding the country, the country still benefits from the donations. The use of which foreign policy tool is described in the passage?
A. Diplomacy
B. Military intervention
C. Sanctions
D. Humanitarian aid