Final answer:
Absolute zero is equal to 0 degrees Kelvin (0 K), which is also known as the lowest possible temperature where all molecular motion stops. It is the starting point of the Kelvin scale, an absolute temperature scale with no negative values.
Step-by-step explanation:
Absolute zero is the lowest possible temperature where all molecular motion ceases. It is on the Kelvin scale, a temperature scale commonly used in science due to its absolute nature. Therefore, 0 absolute is equal to 0 degrees Kelvin (0 K), which is option B. Absolute zero corresponds to -273.15°C or -459.67°F, but it is defined as 0 K on the Kelvin scale. Moreover, 273 Kelvin is actually the freezing point of water, which is why 0 K is the only correct answer here. Remember that the Kelvin scale is an absolute temperature scale, hence there are never negative Kelvin values.
The temperature represented by "0" absolute is 0 K which is known as absolute zero (the lowest possible temperature that can be theoretically achieved). Absolute zero on the Kelvin scale corresponds to -273.15°C on the Celsius scale. It is the point at which molecular motion ceases and no thermal energy is produced.