Is the following a sentence or a fragment: they can't. fragment sentence

To protect consumers, the sec requires brokers and dealers to what? information about securities.

What is an agreement to stop fighting in the cold war?

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.