A probability always lies bewteen 0 and 1. So, option B is not even a probability.
As for the others, probability 0 means that the even't cannot happen, whereas probability 1 means that event is certain. So, the bigger the number, the greater the probability (as one may expect).
Since 0.09 < 0.12 < 0.89, the greatest number represents the event that is more likely to occur.
Moisture content should be the difference of the weight of the object wet (10 oz.) and the weight of the object when it was dry(8 oz.) So, 10 oz. - 8 oz. =moisture content, or 2 oz.
