The answer is “3 only”, can someone kindly explain why?
This is complicated, I do agree with your answer, im guessing because in the 2nd sentence of the final paragraph, it says the volume of motor vehicle traffic as a whole has fallen, whilst congestion hasn’t, we can’t say that, car ownership has not reduced the road congestion as it might be the result of other vehicles? Not sure that makes sense though, a bit confused.
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I totally agree with your reasoning Tysm!
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