This type of blood stain pattern is created when blood has been expelled from the airways. You can typically see oxygen bubbles imprinted in the pattern. Select one: a. Arterial b. Expirated c. Gunshot d. Cast-off e. Contact Clear my choice

The correct answer is b. Expirated.<br /><br />Expirated bloodstains are created when blood is expelled from the airways, such as the mouth, nose, or lungs. These stains often contain oxygen bubbles, which can be seen imprinted in the pattern. The presence of oxygen bubbles is a key characteristic that helps distinguish expirated bloodstains from other types of bloodstains.