Final answer:
The United States has the highest per-capita energy consumption among the options provided, due to factors such as geography, climate, and lifestyle, and historical data shows its substantial use of global energy resources.
Step-by-step explanation:
The United States is known for its high per-capita energy consumption due to a variety of factors, including geographical extent, climate, efficiency, and lifestyle. As of the information provided, the United States consumes almost 10 kJ per person per day, which translates to significantly higher energy use compared to other countries. In the past, the U.S. consumed an astounding percentage of global natural gas and petroleum despite having only 6% of the world's population.
Today, even though the U.S.'s percentage of global consumption has decreased compared to the 1950s, it still remains one of the top consumers of energy resources on a per-capita basis. As such, the U.S. places a high demand on resources, even when considering population growth. Wealthier countries generally use more energy per person, with the U.S. being a prominent example. In contrast, citizens of Niger add only a minimal demand on energy resources per year, which indicates a vast difference in per-capita energy consumption between developed and developing countries.