The correct answer is B) he believed they were causing social and environmental harm.
<em>Blake referred to the mills as "dark satanic" because he believed they were causing social and environmental harm.</em>
In his famous poem "Jerusalem", English poet William Blake referred to the mills as "dark satanic" because he believed they were causing social and environmental harm.
In the poem, he specifically writes: "And was Jerusalem builded here among those satanic mills..."
Other authors consider another possible option for that concept. They say that Blak, being considered a radical religious man, referred to that mills, meaning they represented the Orthodox church.