Need historians are concerned with accuracy of their writings and readings but are also aware of a.) inability of authors to know every cause and consequence of every story. b.) biases, perspectives, beliefs, and a variety of other differences. c.) history being told by one person at a time d.) no one being totally accurate, as hard as we try.

a.) inability of authors to know every cause and consequence of every story.

Explanation:

Historians are concerned with accuracy in their writings. In general, all authors want their work to reflect reality as correctly as possible. However, authors are also aware of their inability to know every cause and consequence of every story. Their inability to be informed of every detail of a story means that they might miss some event that was significant to the time period they are studying.

its main object was the establishment of "settlement houses" in poor urban areas, in which volunteer middle-class "settlement workers" would live, hoping to share knowledge and culture with, and alleviate the poverty of, their low-income neighbors.

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explanation:

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