The most appropriate choice for Probability of an event will be given by-
P(7) = 
What is Probability?
Probability gives us the information about how likely an event is going to occur
Probability is calculated by Number of favourable outcomes divided by the total number of outcomes.
Probability of any event is greater than or equal to zero and less than or equal to 1.
Probability of sure event is 1 and probability of unsure event is 0.
Here,
Sample space = {6, 7, 8}
Total number of outcomes = 3
Favourable outcomes = {7}
Number of favourable outcomes = 1
Probability of getting a 7 = P(7) = 
To learn more about probability of an event, refer to the link:
brainly.com/question/251701
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