Answer:
The correct answer is letter "C": New strict laws in the area require buildings in the industrial areas to reduce their emissions by 60% in the next 5 years.
Step-by-step explanation:
According to the point of view of the author, the mild winters are caused due to high concentration of vehicle exhaust emitted in the region. However, from the research of the scientists, the mild winters are caused because of the increase in the rate of the commercial areas being changed into industrial areas. The idea that reinforces the scientists' point of view must blame the industrial workforce for the mild winters in the region. Out of the 5 options we have, letter "C" matches with the scientists position because if the new laws are already forcing industrial areas to reduce their emissions, it is because it has been proved that industrial areas are the main cause of the pollution in that region, not the concentration of vehicle exhaust as the author states.