Certain
Step-by-step explanation:
A probability of 100% means the likelihood of the event occurring is 1.
And a probability of 1 means it is certain.
A probability of > 70% but less than 100% for example, will amount to the likelihood of the event occurring to be likely. That means there is a high chance of it occurring.
A probability of <40% for example will indicate the likelihood of the event occurring to be unlikely. In other words, ther is lowchance of it occurring.
A probability of zero would mean it is impossible
A probability of 100% means the likelihood of the event occurring is certain