Can someone plss help me I don't understand this!

May someone me answer these questions

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.

Which would best develop a well-organized and logical research paper? a. narrow goals b. a variety of sources c. good research results d. a strong topic