Which type of operating system is commonly used in specialized business devices like point-of-sale systems,...

Embedded operating systems are lightweight operating systems designed for specialized hardware with specific functions. These are often Linux-based and optimized for devices such as point-of-sale (POS) systems, industrial controllers, smart appliances, and medical devices. They provide stability, security, and resource efficiency in environments where the device is dedicated to one or a few specialized tasks.

Option A: Refers to general-purpose desktop OS (e.g., Windows, macOS), not specialized.

Option B: Refers to Chrome OS, which is designed for laptops and cloud computing.

Option D: Refers to mobile OS (Android/iOS), focused on consumer use, not industrial or specialized embedded devices.

Thus, the correct answer is a Linux-based embedded operating system.