Evidence that a source is authoritative includes a. An email address to ask further questions
about information in the source
b. A date regarding when the source was
written
C. No verbiage used which could identify bias
about the information provided
d. Logical structure of the information provided
so that it is easily read and understood

a. An email address to ask further questions

about information in the source

Explanation:

One of the evidence that a source is authoritative includes that an email address is attached where additional questions can be asked about the information provided.

This shows authoritativeness because it proves that the author is an authority on the given subject and can give answers to further questions.

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serve the people! ,” smoothly translated by julia lovell, offers an initial sample of yan lianke’s writing to an english-speaking audience. a bluntly drawn, mildly erotic fable, it teases mao zedong by poking fun at a true believer who obeys the chairman’s precepts too literally. to a western sensibility, the broad strokes of yan lianke’s humor would seem to pose little risk of inciting rebellion, whether of the flesh or of the body politic. but then, part of the book’s attraction is that it doesn’t have a western sensibility. it lets the reader see — or rather, intuit — what jokes chinese officials don’t consider funny, and how very little it takes for a writer to be branded an incendiary in 21st-century china, more than three decades after the death of mao, a decade after the death of deng xiaoping and seven years since china entered the world trade organization, a move that would seem to signal a willingness (however wary) to mingle with the rest of the world.

this map shows the geographic distribution of different tidal cycles along some earth's coastlines. areas experiencing tides are marked in yellow and experience one low tide and one high tide each day.