Final answer:
Among the options provided, a pencil does not represent a good example of a system as it lacks interacting or interdependent components that define a system.
Step-by-step explanation:
A system in a physical or technical context typically refers to a set of interacting or interdependent components forming an integrated whole. A car, a laptop, and a light-rail tram all clearly fit this definition as they consist of various components that work together to perform specific functions. A pencil, on the other hand, does not have such interacting or interdependent parts. It is a simple object rather than a complex assembly of parts designed to interact with each other. Therefore, a pencil does not offer a good example of a system in comparison to the other options provided.