Avery has never worried about computer viruses. However, a friend who works in IT recently told him about a new wave of viruses. Avery is wondering whether he should pay more attention to this threat, and if so, what he can do to protect his computer. Which option represents the best advice for him? Multiple Choice Although viruses are potentially harmful, there is no effective way to prevent their spread. The best approach is to back up important files on a regular basis and reformat the hard drive any time a virus appears. There is no absolutely foolproof way to avoid viruses, but one reasonably effective safeguard is to install antivirus software and use it to scan files before downloading them, particularly from unknown sources. It is important to make sure that the software is updated on a regular basis to remain effective. The Internet has automatic safeguards that prevent viruses from being transmitted when files are downloaded. Thus, the best way for Avery to avoid harmful viruses is to use the Intern