Answer:
Students become vulnerable to cyberbullying and harassment.
Explanation:
All of the given choices are indeed common barriers to oral communication. But among them, "noise" is the only one which may not be the fault of the sender of the receiver. Noise can be generated by nearby sources independent of the sender or receiver.
Government weapon in cold war
Explanation:
I think that you might have used it a lot or its just a glitch and will come back after some time.
It might be that your screen cracked.
But try re-booting if that does not work, wait and take off the battery.
Online library resources
Explanation
Students can utilize online library resources from various campus available for online educational uses.In the library, information on current research in the various displines can be obtained through a search on the book, journal or document.In addition to that, goggle offers academic journals and academic documents prepared by scholars for other academicians to read and get information.