Consider the picture of a gas pump. Which type of gasoline has the highest percentage of octane (the main component of gasoline)?
Answer
A
unleaded: 87 octane rating
B
mid-grade: 89 octane rating
C
premium: 91 octane rating
Explanation
Compare the octane ratings: unleaded is 87, mid-grade is 89, and premium is 91. Since 91 is the highest rating, premium gasoline has the highest octane percentage.
AI-written and checked against the verified answer.