Tonya recognizes that one example of the impact of censorship on Internet service providers $($ISPs$)$ is that

a$.$ government authorities or copyright holders rarely submit defamation or copyright infringement claims against Web hosting

b$.$ government entities may pressure ISPs to limit access to some or all of the content on certain Web sites

c$.$ law$-$enforcement agencies can force ISPs to identify customers who send emails using anonymous remailers

d$.$ ISPs can be prosecuted or sued for objectionable content generated by their customers, even if they are purely service provic