Which of the following is not a basic guideline to follow when working with manual control circuits?

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In manual control circuits, safety and predictable operation drive all guidelines. You want to control motion carefully, protect control wiring, and prevent unintended transitions between modes. Jogging at the highest machine speed undermines safety and setup accuracy—you need a slow, controlled jog to observe limits, clearance, and responses without risking collisions or mispositioning. Energizing solenoids through relays (when possible) helps protect the control circuitry and isolates high current from the control side, which is a sound practice. When the machine is in manual mode, locking out automatic operation prevents automatic sequences from starting unexpectedly and keeps the operator in full control. Because of that, the statement about jogging at the highest speed isn’t a proper guideline for manual control, while the other two are appropriate practices.