The correct answer is: A. LED display
LED displays are the latest type of display to be used for portable computers. They are more energy-efficient than LCD displays and have a wider viewing angle. LED displays are also thinner and lighter than LCD displays, making them ideal for portable devices.
LCD displays are the most common type of display used in portable computers. They are relatively inexpensive and have a good image quality. However, LCD displays are not as energy-efficient as LED displays and have a narrower viewing angle.
Plasma displays are a type of display that uses plasma to create an image. Plasma displays are brighter than LCD displays and have a wider viewing angle. However, plasma displays are more expensive than LCD displays and consume more power.
Electroluminescent displays are a type of display that uses electroluminescence to create an image. Electroluminescent displays are thin and lightweight, but they have a low image quality and a narrow viewing angle.
In conclusion, LED displays are the latest type of display to be used for portable computers. They are more energy-efficient than LCD displays and have a wider viewing angle. LED displays are also thinner and lighter than LCD displays, making them ideal for portable devices.