After screening, how many healthy embryos are left from Marie's fertilization process?

In the context of the film "GATTACA," which explores genetic engineering and its implications, the number of healthy embryos left after screening is a crucial aspect of understanding the consequences of genetic selection. In the process depicted, embryos are screened for genetic defects and potential health issues, allowing only those deemed 'healthy' to be selected for implantation.

In this specific scenario, if the answer is that there are four healthy embryos remaining, this indicates that during the screening process, a thorough evaluation of the embryos was performed. The assessment focuses on ensuring that only those embryos free from genetic conditions or predispositions are chosen, emphasizing the film's theme of genetic discrimination.

The number four likely reflects a scenario where a sufficient number of embryos were originally created and subsequently out of those, four were found to be favorable through genetic testing. This situation highlights the advances in reproductive technologies portrayed in "GATTACA" and serves as a critical point reflecting the ethical and societal implications of such practices in selecting traits for future generations.