Viruses and worms can affect a system by: A. Deleting hard drives
B. Slowing down the system
C. Improving system functions
D. Productive fake applications

A

Explanation:

Worms can modify and delete files, and they can even inject additional malicious software onto a computer. Sometimes a computer worm's purpose is only to make copies of itself over and over — depleting system resources, such as hard drive space or bandwidth, by overloading a shared network

depends on what software you are using. google docs or microsoft word or other?

what? ? i don't get it