Question 21. Which of the following best paraphrases the underlined sentence in paragraph 3? A. Transport systems depend entirely on fuel sa...

Question 21. Which of the following best paraphrases the underlined sentence in paragraph 3?

A. Transport systems depend entirely on fuel savings to stay functional.

B. Public transport becomes more popular because fuel is cheap in many cities.

C. Fuel consumption always decreases whenever public transport is crowded.

D. Less fuel use helps public transport operate effectively without costing too much.