1. how efficient are most conventional vehicles?\n75%\n50%\n35%\n25%

1. how efficient are most conventional vehicles?\n75%\n50%\n35%\n25%
Answer
Brief Explanations:
Most conventional vehicles are typically around 25% - 30% efficient due to energy losses in combustion, drivetrain, and other components. Among the given options, 25% is the most accurate representation.
Answer:
D. 25%