Final answer:
The award that may only be awarded if the achievement or service occurred in a location where Imminent Danger Pay (IDO) or Hostile Fire Pay (HFP) was authorized is the Purple Heart Medal.
Step-by-step explanation:
The award that may only be awarded if the achievement or service occurred in a location where Imminent Danger Pay (IDO) or Hostile Fire Pay (HFP) was authorized is the Purple Heart Medal. The Purple Heart is a United States military decoration awarded in the name of the President to those who are wounded or killed while serving with the U.S. military.