What is a junction box used for in electrical systems?

A junction box plays a crucial role in electrical systems by serving as a protective enclosure for wire connections and splices. Its primary function is to safely house the connections of various electrical wires, ensuring that they are protected from environmental factors, physical damage, and accidental contact. By providing a safe enclosure, junction boxes help prevent electrical hazards such as short circuits and electrical fires. Additionally, they facilitate easier access for maintenance and troubleshooting of the wiring system. This safe and organized environment for electrical connections is essential for the overall safety and efficiency of electrical installations, making option B the correct choice.

In contrast, the other options do not accurately represent the role of a junction box. For example, while enhancing the flow of electricity could be an appealing notion, a junction box does not actively improve electrical performance; it merely provides a space for connections. Serving as a decorative fixture is unrelated to the functional purpose of junction boxes, which focus exclusively on safety and protection. Lastly, a junction box does not act as a transformer; transformers are distinct devices designed to change voltage levels of electrical power, which is separate from the functions of a junction box.