From the passage it is clear that one of the advantages of written communication is that ____ .

Written communication is the basis of much
communication in business. This includes letters,
reports, memoranda, notices, telex, and fax messages.
Although written communication is a slower form of
communication than verbal or oral, it provides a
record of what is being discussed so that
disagreements are avoided and accuracy can be
checked; it will also be more detailed than other forms
of communication, with the possibility of technical
points being explained and interpreted.