As far as windows 7 and below it was control panel, but in windows 8 and higher, microsoft added, a new app which was called settings, control panel was still there but with a few features removed
Because of the reflection on the window or mirror.
Answer:
Speaker, Keyboard, Monitor, Mouse
Explanation:
A peripheral device is used to put input into (or receive output from) a computer. Parts of a computer wouldn't be considered peripheral.