Which of the following types of display takes the least space on a desk?

A.
Mercury

B.
LED

C.
CRT

D.
LCD

Explanation:
The Liquid Crystal Display (LCD) is an electronically modulated optical amplification shaped into a
thin, flat display device made up of any number of color or monochrome pixels arrayed in front of a
light source (backlight) or reflector. It is often utilized in battery-powered electronic devices because
it uses very small amounts of electric power. The LCD display also takes the least space on a desk.
Answer options C and B are incorrect. CRT and Light Emitting Diode (LED) displays take lots of space
as compared to LCD display.