Answer:
B, 24 ÷ 6
Step-by-step explanation:
Yes Karis is correct I hope this helps and if its wrong let me know but I'm sure I'm correct

Actually Welcome to the Concept of the Probability.
Basically we have to know that, when there is a specific event for which a probability has to be done, there are always two possibilities that is,
Event favourable and Not Favourable.
the Sum of both always end up as 1.
thus sum of the probability distribution is 1.