Question

a chronicle of new vehicle fuel economies was published by the u.s. environmental protection agency in the 2020 automotive trends report. which of the following factors is most likely to have triggered the change in fuel economy that began in 2004? choose 1 answer: a consumer trends towards large 4 - wheel drive vehicles allowed for an increased fuel economy. b the growing popularity of sub - compact sedans caused a decrease in fuel economy. c integrated battery technology and more efficient engines allowed for increased fuel economy. d incorporating larger combustion engines into more vehicles allowed for increased fuel economy.

Explanation:

Larger 4 - wheel drive vehicles typically have lower fuel economy, so option A is incorrect. Sub - compact sedans are generally fuel - efficient, so option B is wrong as it claims they cause a decrease in fuel economy. Incorporating larger combustion engines usually leads to lower fuel economy, so option D is incorrect. Integrated battery technology (hybrid or electric - related) and more efficient engines are known to increase fuel economy, which is consistent with the upward trend in fuel economy starting around 2004.

Answer:

C. Integrated battery technology and more efficient engines allowed for increased fuel economy.