Final answer:
The artwork featuring a row of lions on Babylon's Processional Way is a bas-relief, a type of sculptural technique in which the sculpted elements are raised slightly from the background.
Step-by-step explanation:
The row of lions on Babylon's Processional Way is a form of artwork known as bas-relief. This type of art is a technique wherein the sculpted elements remain attached to a solid background of the same material. The bas-relief method creates a subtle three-dimensional effect. The depicted lions would have been carved directly into the walls or panels that aligned the Processional Way, enabling them to stand out slightly from the surface. Bas-relief is a common technique in Mesopotamian art, as it was used extensively in palaces and public buildings for decoration and storytelling. These reliefs often depicted stories of kings and deities as well as scenes from mythology and daily life, and they were typically painted to enhance their visual impact, although the color has often faded over time.