Final answer:
The transportation sector in the US utilizes the most energy, with approximately 92% of transportation energy coming from petroleum.
Step-by-step explanation:
In the United States, the sector that utilizes the most energy is Transportation. According to the provided information, approximately 92% of transportation energy is in the form of petroleum.
The transportation sector includes vehicles such as cars, trucks, buses, motorcycles, trains, aircraft, boats, barges, and ships. This sector is heavily dependent on fossil fuels, particularly petroleum, for powering these modes of transportation.