Is it legal to possess a firearm while under the influence of alcohol in Utah?

In Utah, it is illegal to possess a firearm while under the influence of alcohol. This prohibition applies regardless of whether the individual is carrying the firearm, in their own residence, or displaying the firearm publicly. Possessing a firearm while under the influence of alcohol can lead to dangerous situations and is against the law to ensure public safety. Therefore, the correct answer is B: No.