QUESTION $14$

The deep Web refers to:

a$.$ networks that allow only mutually trusted peers to participate in file$-$shang activities.

b$.$ seemingly innocent websites, containing malware that infects computers.

c$.$ sites that cannot be indexed by Google and other search engines.

d$.$ peer$-$to$-$peer file sharing networks that are used to illegally share copyrighted material.

e$.$ websites that advocate violence toward people of a specific race, ethnicity, or religion.