Which of the following is one of the ways shock normally occurs?

Contact with one wire of the circuit and a ground is a primary way in which electrical shock can occur. This situation creates a path for electrical current to flow through the body, which typically happens when a person touches a live wire while simultaneously touching a grounded surface. This connection allows the current to pass through the person to the ground, leading to a shock.

Understanding this can highlight the importance of electrical safety practices such as proper insulation, grounding, and the use of protective equipment when working with electrified tools or systems. In contrast, insulated surfaces, battery terminals, and dry surfaces generally do not provide a conductive path that can lead to electrical shock under normal circumstances.