ANSWER
Step-by-step explanation
The probability of an event is a number that represents the possibility that the event will happen.
Hence, an event that is certain to happen
(The number of favorable outcomes is equal to the number of all possible outcomes) and this has a probability of 1.
Given that there is chance that an event will happen, the probability is between 0 and 1.
Hence, the range is between 0 and 1