What tool is recommended for making permanent electronic connections?

A soldering iron is recommended for making permanent electronic connections because it facilitates the process of holding components together with a molten material, usually solder, which solidifies upon cooling to create a reliable electrical connection. This method is crucial in electronics as it ensures that the connections are strong, durable, and capable of withstanding mechanical stresses and temperature variations.

In contrast, other tools like a screwdriver or a wire stripper serve distinct purposes. A screwdriver is primarily used for assembling or disassembling mechanical components or securing elements within a device. A wire stripper is designed to remove the insulation from electrical wires to prepare them for connection, but it does not create a permanent bond between components. A circuit tester, meanwhile, is used for checking the continuity of electrical connections and diagnosing faults, rather than establishing them. Thus, a soldering iron stands out as the appropriate tool for creating lasting electronic connections.