Answer:
The given experiment is not a binomial experiment, and the reason why it doesn't meet the criteria for a binomial experiment is option D:
d. not binomial; the number of trials is not fixed.
In a binomial experiment, there must be a fixed number of trials. In this case, you keep tossing the 6-sided die until a "2" is observed. Since there is no fixed number of trials specified, the number of trials can vary, making it not a binomial experiment.
Explanation: