Which revision most effectively corrects the faulty coordination in this sentence? The Internet has changed communications, and it allows computer networks to interconnect.

Question

The Internet has changed communications it allows computer networks to interconnect.

The Internet has changed communications, but it allows computer networks to interconnect.

The Internet has changed communications by allowing computer networks to interconnect.

The Internet, changing communications, allows computer networks to interconnect.

Answer 1

The revision that most effectively corrects the faulty coordination in the sentence is:

The Internet has changed communications by allowing computer networks to interconnect.