Experimental Probability is the ratio of the number of times an event occurs to the total number of trials or times the activity is performed.
Theoretical probability is equal to the number of favorable outcomes divided by the total number of possible outcomes.
In your case, when tossing a coin 15 times, you get the Pr(Heads)=2/5, this probability is experimental and the result is found by repeating an experiment.
Answer: correct option A.