The correct answer is D) attempt to reset the overload relay and determine the cause of the overload if applicable. The reasoning is that with a voltmeter reading between 1 and 5 volts, as illustrated in figure "A", it indicates that the line voltage is available to the control circuit. This suggests that the issue is likely not with the power supply, but rather with the control circuit itself. The next logical step in the troubleshooting process would be to check the overload relay, as it may have tripped, preventing the motor from starting. Resetting the overload relay and determining the cause of the overload would be the appropriate next step in the troubleshooting process. The other options are not the correct next step in the troubleshooting process: A) Ensuring the disconnect switch (DS) is closed is not necessary, as the voltmeter reading indicates that the power is available. B) Testing the contactor coil "M" for continuity and replacing it if necessary is not the next logical step, as the issue is likely with the overload relay rather than the contactor. C) Testing the stop button for continuity and replacing it if necessary is also not the next logical step, as the voltmeter reading indicates that the issue is not with the power supply or control circuit wiring.