Final answer:
Surveillance is primarily used in healthcare for patient monitoring.
Step-by-step explanation:
The least accurate statement regarding surveillance is C) Surveillance is primarily used in healthcare for patient monitoring. While surveillance is indeed used in healthcare for patient monitoring, it is not the primary use of surveillance. Surveillance involves systematic monitoring of individuals or groups (A), it is often used for security purposes (B), and it can involve the use of technology for data collection (D).