Final answer:
The number of wires used in communication control systems varies, but at least two are needed for basic systems. The resistance of wires made from the same material depends on their lengths and diameters.
Step-by-step explanation:
The number of wires used by communicating control systems to connect the components can vary depending on the system's complexity and the type of control signals being transmitted. Typically, for a basic communication circuit, at least two wires are required: one for the signal path and the other for a common return path or ground. In more complex systems, multiple wires may be used to carry various signals and power separately.
In the context of the questions provided, if the four wires are made from the same material, we can apply the principles of electrical resistance to find the correct answers. The resistance of a wire is directly proportional to its length (L) and inversely proportional to its cross-sectional area (D). Without exact measurements of these dimensions, we cannot answer definitively, but we can infer that if Wire 3 is longer than Wire 2 or has a smaller diameter, then Resistance of Wire 3 > Resistance of Wire 2, and if Wire 1 is shorter than Wire 2 or has a larger diameter, then Resistance of Wire 1 < Resistance of Wire 2. Similarly, comparisons can be made between Wires 1 and 4, and Wires 4 and 3, to determine the relative resistances.