The correct option is A Non-Statistical question; Statistical question
To answer a statistical question, analyzing of a data set is required, whereas to answer non-statistical data, a data set is not required as it can be answered by a single value.
Here, the question, "How many snacks are available at a vending machine?" can be answered by just counting the number of different snacks available and thus no collection of data is required.
Thus, it is a non-statistical question.
Whereas on the another hand, the question, "Which is the most prefered snack?" is answered by analyzing the data set which depicts the snacks selected by different people.
Hence, it falls under the category of statistical data.