B
It has decreased the demand for SUVs.
Explanation:
SUVs are responsible for large energy consumption and power emissions as they are big vehicles that need a lot of energy to run.
With the imminent crisis because of greenhouse emissions people have started becoming aware of their own carbon footprint and have begun taking steps to minimize it.
In a bid to do the same many people have started giving up on their old vehicles for newer, smaller ones.
This in turn will decrease the demand for the older SUVs as not enough people are willing to buy these vehicles from the stores.