Sending reports and proposals as PDF files

A) reduces the likelihood of inadvertently spreading macro viruses and other contaminations.
B) increases the chances of inadvertently spreading macro viruses and other contaminations.
C) gives you less control over how the document is displayed on the audience's computer.
D) is likely to frustrate audiences, since they require expensive software to open.
E) makes it especially difficult to gather comments and other input from reviewers.

Answer: A
Explanation: A) Many people are reluctant to open word-processor files these days, particularly from outsiders, given the greater vulnerability of such files to macro viruses and other contaminations. PDFs can be safer than word-processing documents, so many people prefer them. PDFs also ensure that your audience will see the document as you designed it.