Final answer:
In the repository architecture, the data store is passive, meaning it waits for requests, and clients are active, meaning they interact and possibly modify data.
Step-by-step explanation:
The data store in the repository architecture is passive, and clients of the data store are active. In this context, 'passive' refers to a data store that does not initiate communication but rather waits for clients to make requests. On the other hand, 'active' clients refer to the users or components that actively interact with the data store by sending requests and possibly modifying the data. Hence, the correct answer is c. passive/active.