Which famous artistic technique is represented in 'Akhenaten and His Family' through its form?

The correct choice emphasizes the use of relief sculpture in 'Akhenaten and His Family.' This artwork exemplifies relief sculpture through its creation of figures that are raised from the background surface, providing a sense of depth and dimension. In this ancient Egyptian artwork, the figures are not fully three-dimensional but rather project from a flat background, typical of relief sculptures that convey narrative and symbolism in a space-efficient manner.

Relief sculpture was a prominent technique in ancient Egypt, often employed to depict important scenes involving royalty and deities, enhancing the visual storytelling by allowing figures to interact within a defined pictorial space. Such techniques were essential in Egyptian tombs and temple adornments, effectively capturing the essence of the figures and their significance.

The other artistic techniques listed do not apply to this work in the same way. Fresco techniques involve painting on wet plaster, which is not the approach taken in this artwork. Etching methods are related to printmaking and are not relevant to sculpture. Contrapposto positioning, while an important technique in rendering the human form, is more associated with classical sculpture and does not reflect the stylistic approach of 'Akhenaten and His Family.' Thus, relief sculpture is the most accurate technique represented in this artwork.