Respuesta :
Answer: A) Carpooling can help decrease the level of carbon dioxide emissions.
Explanation: The sentence that best expresses the main idea of a speech arguing that students should carpool to school is Carpooling can help decrease the level of carbon dioxide emissions.
The main idea of the speech is best expressed as carpooling can help decrease the level of carbon dioxide emissions.
What is carpooling?
This is the sharing of car journey so that more than one person travels in a car and prevent the need for other to have to drive to a location themselves.
The idea of car pooling is expressed in the passage as it helps to decrease the level of carbon dioxide.
The correct answer is option A.
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