Answer:
see step by step
Explanation:
He can spin a lot of times the wheel, Notice IF THE SPINNER IS FAIR the probability must be equally, since the spinner have 4 options it must have 0.25 (25%) probability in each of the colors. Of course, since the probability is random the theoretically probability need to be closer to 0.25 for each one, to evade the randomness Klevon can spin the spinner a lot of times.
(for example, if he spins 100 times, he can get 28, 31, 25 and 20 and the spinner can still be fair, he can spin another 100 times to see the results, but if he have 5,5,80, 5 in the results, the probability is really low of this happening, so its probability unfair, but still, posible)