The option that accurately reflects some perceived weaknesses of the Linux operating system from the provided choices is:
Hard to troubleshoot, open-source system, which means it is weak against security threats, lacks technical support, and is unsupported hardware.
However, it is important to note that some of these weaknesses are subjective and can vary depending on the user's experience and context. For instance, while Linux is open-source, many argue that it benefits from community support and transparency rather than being inherently weak against security threats.