Answer:
Zero kelvin
Step-by-step explanation:
The movement of particles becomes slower the colder it gets. However, they completely stop moving only at the temperature of zero kelvin, which is considered the absolute zero, and the temperature that can’t get lower and colder. There is no natural place that is this cold, not even space.
Transformed into Fahrenheit, this temperature would be minus 459.67 degrees, or minus 273.15 degrees on the Celsius scale.