Shauna has collected a variety of sources for her research about charlie chaplin’s impact on american cinema. in performing her preliminary evaluation of each source, shauna should-thoroughly review and examine the content.-perform a quick search to determine the author’s reliability.-check whether the author agrees with experts on the subject.-decide whether it will be useful in her final essay.

The correct answer is “perform a quick search to determine the author’s reliability.”

Indeed, determining the reliability of a source is inextricably linked to the determination of the reliability of the source’s author since it will necessarily affect the quality of the source’s findings. The author might be a respectable scholar/professional of his/her field or be a charlatan or a ferocious ideologue that is subjective and obscures facts or misrepresents findings in order to advance an ideological agenda.

There is also the issue of fallibility; the findings might be incorrect based on a myriad of factors (technological knowledge and advancement at the time of the work that might prove incorrect as new research or information becomes available, political or social environment hindering the research of the author, flawed methodology, etc.).

Of course, this is only a preliminary evaluation and certain parts of the source’s research might still be usable and/or relevant but determining the author’s reliability provides valuable insight to the new researcher on how to evaluate the source’s work.

perform a quick search to determine the author’s reliability.

Explanation:

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21 balloons is the story of professor william sherman's travels.

in 1883, he set off from san francisco for a balloon ride over the pacific and was found a month later floating with 21 balloons in the atlantic ocean. this seemed an astounding feat and everyone wanted to know what had happened.    

professor sherman was loyal, however, and said he would tell his tale first to the western american explorers club in san francisco, of which he was a member. this built up suspense for several chapters before he began to tell of the wonders of his adventures and the amazing island of krakatoa, an island which had just been blown up by a volcano.  

the residents of krakatoa are all millionaires who live under a "gourmet government" of their own devising. we get to see all the incredible adventures that creative people with unlimited resources would create according to the author.