Final answer:
The probability that Ximena will win a prize, given as (23/24), signifies that she is very likely or has a high probability of winning the prize in the raffle.
Step-by-step explanation:
The phrase that describes the probability that Ximena will win a prize, given that her probability of winning is (23/24), is very likely or high probability. This is because (23/24) signifies a very high chance of winning since it is very close to 1, which would mean a certainty of winning. Probabilities are always between 0 and 1, where 0 means that an event will not occur for sure, and 1 means the event is certain to occur. Thus, having a probability of (23/24) is indicative of a situation where one can expect to win with almost certainty.