"c. A narrative source" is what a historian would use to get a firsthand account of a past event, since in these sources (which are also primary sources) a person is giving a first-hand account of the event itself.
work·er
/ˈwərkər/
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noun
1.
a person who does a specified type of work or who works in a specified way.
"a farm worker"
2.
a person who produces or achieves a specified thing.
"a worker of miracles"
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The power of the monarchy was limited!
Political Islam is the doctrine that relates to the unbeliever
