The correct answer is B: Flatbed Thermal monitor.
Explanation:
The given question asks us to identify the type of monitor that is NOT included in the list. Let's analyze each option to determine the correct answer:
A: Cathode Ray Tube (CRT) - This is a type of monitor that was widely used in the past but has become less common with the advent of newer technologies. It uses a cathode ray tube to display images.
B: Flatbed Thermal - This is not a valid type of monitor. Flatbed thermal refers to a type of printer, not a monitor.
C: Light Emitting Diode (LED) - This is a type of monitor that uses LED backlighting to display images. LED monitors are known for their energy efficiency and high contrast ratios.
D: Liquid Crystal Display (LCD) - This is another type of monitor that uses liquid crystal technology to display images. LCD monitors are widely used and are known for their slim profile and low power consumption.
In conclusion, the correct answer is B: Flatbed Thermal as it is not a type of monitor.

Introduction:
A monitor is an output device that displays visual information generated by a computer. It allows users to interact with the computer by providing a visual representation of the data processed by the computer. Monitors come in different types, each with its own technology and features.

Explanation:
The correct answer is option 'B', which states that "Flatbed Thermal" is not a type of monitor. Let's examine each option to understand why this is the correct answer:

a) Cathode Ray Tube (CRT):
A Cathode Ray Tube (CRT) monitor is an older technology that uses an electron beam to create images on a phosphorescent screen. It was widely used in the past but has been largely replaced by newer technologies due to its large size and high power consumption.

b) Flatbed Thermal:
This option is incorrect because "Flatbed Thermal" is not a recognized type of monitor. It does not correspond to any existing monitor technology. Therefore, it is not a valid option.

c) Light Emitting Diode (LED):
An LED monitor uses light-emitting diodes to display images. This technology offers several advantages such as energy efficiency, high contrast, and a wide color gamut. LED monitors are commonly used today and are known for their slim design and vibrant display.

d) Liquid Crystal Display (LCD):
An LCD monitor uses liquid crystal technology to display images. It consists of two layers of polarized glass with a liquid crystal solution in between. When an electric current is applied, the liquid crystals align to allow or block light, creating the desired image. LCD monitors are popular due to their thin profile and low power consumption.

Conclusion:
In conclusion, "Flatbed Thermal" is not a type of monitor. The correct options for types of monitors are Cathode Ray Tube (CRT), Light Emitting Diode (LED), and Liquid Crystal Display (LCD).