Which car has the greatest efficiency? (1 point)

• a 1,200 kg car that travels 15 km per liter of fuel
a 1,200 kg car that travels 20 km per liter of fuel
• a 900 kg car that travels 20 km per liter of fuel
• a 900 kg car that travels 15 km per liter of fuel

The car that has the greatest efficiency is the one that travels the most distance per liter of fuel. Therefore, the 1,200 kg car that travels 20 km per liter of fuel has the greatest efficiency.