Final answer:
The key component(s) used to determine how time is spent by the cancer registry staff is knowing what is required and being asked of the registry. Hence the correct answer is option 3
Step-by-step explanation:
The key component(s) used to determine how time is spent by the cancer registry staff is knowing both what is required of the registry and what is being asked of the registry. By understanding the requirements set for the cancer registry and the specific data that needs to be collected, the staff can allocate their time accordingly and ensure compliance with regulations.
Hence the correct answer is option 3