Study the editorial cartoon by Ann Cleaves.

2 people in hard hats and yellow vests walk by an industrial plant where smokestacks and storage containers are belching smoke. At the bottom is the caption "Now we are really cooking!"

Which element best supports the cartoonist's perspective?

the friendly sign on the side of the power plant
the happy expression on the worker's face
the storage tanks of crude oil near the plant
the clouds of pollution in the air above the plant