Final answer:
A code of ethics is not directly applicable to data subjects of a data-driven technology system, as they are not involved in managing, designing, or developing these systems. Instead, they are the individuals about whom data is being collected.
Step-by-step explanation:
To determine to which groups a code of ethics would not be applicable, it's important to understand the roles of each group in relation to data-driven technology systems. Codes of ethics typically apply to those who are involved in the decision-making, designing, and developing processes of such systems. This includes business managers, designers, and developers of the data-driven technology system as they all play a critical role in how these systems operate and therefore have ethical obligations to uphold.
Data subjects, however, are the individuals about whom data is collected. Since they are not involved in the creation or management of technology systems, a code of ethics geared towards professionals in the field would not directly apply to them as they are not making decisions that impact the creation, distribution, or management of those systems.