What feature differentiates the "In-valids" from others in the society depicted in GATTACA?

The distinguishing feature of the "In-valids" in the society depicted in GATTACA is that they are not genetically designed. In the film's world, genetic engineering allows parents to select desirable traits for their children, leading to a class of individuals known as "Valids," who are genetically enhanced for intelligence, physical abilities, and overall health. In contrast, "In-valids," often born through natural conception without genetic modification, lack these enhancements and face societal discrimination as a result. This fundamental difference forms the basis of the film's exploration of genetic determinism and societal inequality, highlighting the biases that arise from valuing certain genetic traits over others. The other options, while closely related to the concept of genetic design, do not capture the core identity of the "In-valids" in the narrative.