What is indicated by improper installation of resistors?

The improper installation of resistors is indicative of faulty performance in electronic circuits. When resistors are not installed correctly, it can lead to a variety of issues such as incorrect resistance values being used in the circuit, which can adversely affect the functionality of that circuit.

For instance, if a resistor is installed in the wrong orientation or if the wrong resistor is used, it can lead to functions such as reduced current flow, unintended circuit paths, or even complete failure to operate as intended. This results in the circuit not performing as designed, which is why faulty performance is the correct indication of improper resistor installation.

In the context of the choices provided, increased voltage, increased resistance, and short circuits are outcomes that can occur under different circumstances in electronics but are not directly associated with the general consequences of improperly installing resistors. The primary concern when resistors are incorrectly installed is that the performance of the electronic device will be compromised.