B

Explanation:
The correct answer is “B. Cannot be predetermined.” In probability analysis, a random experiment is an experiment or process where the outcome is uncertain and cannot be known in advance, although the set of possible outcomes can be known. The unpredictability of the result characterizes a random experiment.

Run-down:
Random experiments are fundamental to probability theory because they introduce uncertainty. Though the range of possible outcomes can be known, the exact result cannot be predetermined, making such experiments random in nature.