Rewrite the sentences below to make them more concise. Before the travel agent was completely able to finish explaining the various differences among all of the many very unique vacation packages his travel agency was offering, the customer changed her future plans.​

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.