4, 1, and 3
The last one I am going to say three because I know that friends show other friends so I wouldn’t call that “private”
For bad software, probably a virus/malware/ransomware kind of thing. If it is good software, probably a program that organizes your files, adjusts certain things, but do not record your files (no programs are at the top of my head, sorry).
The answer is backlighting
Answer:
Choose Start > Control Panel > Appearance and Personalization > Personalization. Right-click an empty area of the desktop and choose Personalize. Select a theme in the list as a starting point for creating a new one. Choose the desired settings for Desktop Background, Window Color, Sounds, and Screen Saver
Explanation:
Venn diagrams are used to depict set intersections (denoted by an upside-down letter U)......