The chief ethical concern is "Privacy".
A negative aspect of an enormous number of sources available on internet is the concerns about privacy. Web privacy includes the privilege or command of individual protection concerning the sorting, re-purposing, arrangement to outsiders, and showing of data relating to someone through the Internet.Internet security is a subset of data privacy. Privacy concerns have been enunciated from the beginnings of substantial scale PC sharing.
I think it is C. cross-site scripting
Answer: C
it would broaden the search
Explanation:
Placing quotation marks around a search term or phrase limits your search to that exact term or phrase. Without the quotes, your search engine may return all results that contain each separate word. Placing AND between your keywords will return results that only include both or all your keywords.