In which of the following scenarios would an object act as a conductor?

An object acts as a conductor when electrons can move freely through it. In conductive materials, such as metals, the outermost electrons are not tightly bound to any specific atom, allowing them to move easily throughout the material. This free movement of electrons enables the flow of electric current, which is a defining characteristic of conductors.

On the other hand, if electrons are tightly bound to their respective atoms, as is the case with insulators, they cannot move freely, preventing the transfer of electric charge. Similarly, if there is no movement of electrons, as mentioned in one of the other scenarios, there can be no conduction of electricity. While "variable electron movement" could suggest some potential for conduction, it doesn't guarantee that electrons are free to move consistently, which is essential for maintaining a conductive path. Thus, the scenario where electrons move freely is the only situation that fits the definition of a conductor.