Answer:
C
Explanation:
According to the classical definition of probability, in order to calculate the probability of an event, you need to divide the number of cases favourable to it by the number of all possible cases.
A says that probability is based on relative frequency, and this definition is more related to frequentist probability.
B says that probability is based on judgement and experience, which comes more along with the concept of empirical probability.
D says that probability is based on observed data, thus, it gives an statistical approach to probability. In this approach probability can be estimated from what we observe.
I would choose C because if you know perfectly how the outcomes are produced, then you can deduce probabilities. This statement doesnt contradict with the axioms of classical probability.