Which of the following statements about computer viruses is most accurate? Viruses could be completely eliminated if people would quit sharing infected files.

Wild rumors and sloppy reporting have exaggerated the threat computer viruses pose to typical computer users. Almost all real-world computer viruses turn out to be harmless practical jokes.

The Internet contains built-in safeguards that prevent programs with viruses from being downloaded.

Although antivirus software can help identify and eliminate known viruses, the software must be updated frequently to remain effective.

Amajor advantage of case studies is

An increase in the market price of men's haircuts, from $16 per haircut to $26 per haircut, initially causes a local barbershop to have its employees work overtime to increase the number of daily haircuts provided from 20 to 25. when the $26 market price remains unchanged for several weeks and all other things remain equal as well, the barbershop hires additional employees and provides 40 haircuts per day. what is the short-run price elasticity of supply? nothing (your answer should have two decimal places.) what is the long-run price elasticity of supply? nothing (your answer should have two decimal places.)

Kendra knight took part in a friendly game of touch football. she had played before and was familiar with football. michael jewett was on her team. in the course of play, michael bumped into kendra and knocked her to the ground. he stepped on her hand, causing injury to a little finger that later required its amputation. she sued michael for damages. he defended on the ground that she had assumed the risk. kendra claimed that assumption of risk could not be raised as a defense because the state legislature had adopted the standard of comparative negligence. what happens if contributory negligence applies? what happens if the defense of comparative negligence applies?