What is the purpose of genetic screening in GATTACA's society?

The purpose of genetic screening in GATTACA's society primarily revolves around predicting and controlling human potential and health. This advanced form of screening allows individuals to be assessed based on their genetic makeup, including traits such as intelligence, athletic ability, and susceptibility to diseases. As a consequence, these assessments inform life choices, from career paths to relationships, effectively determining an individual's place within society.

In GATTACA, genetic screening serves as a means to establish a 'genetic hierarchy,' where those deemed genetically superior often enjoy greater opportunities and societal advantages. This predictive capability reduces the unpredictability associated with natural variation in human genetics, thus enabling societal norms that favor specific genetic profiles.

The other options reflect aspects that may tangentially relate to the themes in GATTACA, but they do not capture the primary focus of genetic screening in this dystopian society. While enhancing physical attributes could be a byproduct and selecting partners for genetic compatibility could occur, these are not central to the overarching narrative. Eliminating diseases, while an appealing prospect, is less feasible in the complex genetic landscape portrayed, as it implies a level of control over genetics that far exceeds current capabilities.