Respuesta :
Answer:Downloading content over the internet
Visiting unknown websites
Opening unfamiliar emails
The activities like downloading, visiting unknown sites and opening unfamiliar websites infect the system. Hence option A, B, and D are correct.
What is a virus and how does it affect ?
The virus is a software program that is intended to destroy the owner's system and gather potential information.
It may be done for hacking, stealing data, and damaging the system to a larger extent. The virus consists of codes that if initialed can ruin the entire system within minutes and thereby lose.
Thus the option of downloading, visiting, and opening unfamiliar sites and unsafe emails can lead to an attack.
Find out more information about the activities related to computer viruses.
brainly.com/question/4557237.