Answer:
$12.5 per gram
Explanation:
Opportunity cost is the cost which is:
In simple words, opportunity cost is the benefit lost due to given up another best alternative.
To reduce the pollution level from 354 to 250 gram, the price of new vehicle will increase by $1300.
Hence
The increase in price per gram = $1,300 / (354 - 250) = $12.5 per gram
This is the opportunity cost per gram increase in Carbon dioxide emission which the companies will have to bear if they don't opt to environmental free vehicles.