When someone has donned an item, what have they done?

When someone has donned an item, it means they have put it on. The term "donned" is commonly used to refer to the action of dressing or wearing clothing or accessories. This action indicates that the person has successfully put the item onto their body, whether it be a garment, a hat, or any other wearable item.

Other options do not align with the meaning of "donned." The action of taking something off would imply the opposite, while gifting it suggests transferring ownership to someone else, and losing it indicates that the item is no longer in the person's possession. Hence, the definition and usage of "donned" clearly point to the action of putting something on.