The middle ages are sometimes referred to as the dark ages the lack of art, philosophy, and learning of that time a because b due c after d while

The Middle Ages are sometimes referred to as the Dark Ages due to the lack of art, philosophy, and learning of that time

B. Due
Is your answer, because of the lack of art philosophy and learning, the middle ages are commonly known as the dark ages

Due is your answer

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Explanation:

Note the quote from Rodriguez's write up;

"I would propose that instead of adopting the Canadian model of multiculturalism, America might begin to imagine the Mexican alternative that of a mestizaje society.

Because of colonial Mexico, I am mestizo. But I was reinvented by President Richard Nixon. In the early 1970s, Nixon instructed the Office of Management and Budget to identify the major racial and ethnic groups in the United States. OMB came up with five major ethnic or racial groups. The groups are white, black, Asian/Pacific Islander, American Indian/Eskimo, and Hispanic".

This is an exaggeration because Rodriguez speaks of himself as though he was personally been identified by President Nikon when he gave instructions to the Office of Management and Budget when in fact it was a general reference to Hispanics.