Which of the following would be a primary source if you were writing an essay on Betsy Ross’s life? A. A newspaper interview with Betsy Ross’s children.
B. An encyclopedia entry about Betsy Ross’s life.
C. An article written by a biographer 10 years after Betsy died
D. A letter from Betsy Ross to her husband

I would think it's B

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I have no explanation because it's instinct

Moral Fitness is a clear understanding of rules and expectations by man and animal that promotes trust, minimizes stress, reduces accidents, and helps cooperation.

The given sentence is CORRECT AS IS.

All verbs use the correct tense, present tense, as evidenced by the words - promotes , minimizes , reduces, helps.