Which area of the body is least likely to show bruising?

The stomach or abdomen is least likely to show bruising due to the structure and function of these areas. The abdomen is often protected by layers of muscle and fat, which helps to absorb impacts and minimizes the risk of bruising. Additionally, this region isn't as exposed to potential trauma as the arms and legs, which are more frequently engaged in activities where bumps and knocks can occur.

Bruising typically results from blunt force trauma leading to the rupture of small blood vessels beneath the skin, creating a visible mark. While bruising can occur in any area of the body when there is enough force, the abdomen is generally less impacted by such incidents in daily life compared to more active body parts like arms and legs, which are used in a wider range of motions and activities.

The back, while it can also be prone to bruising, often has similar protective factors as the abdomen but is typically more exposed to potential impacts in many circumstances. Therefore, the stomach or abdomen is correctly identified as the region least likely to show bruising.