Question

check your understanding
which step is part of the recommended procedure for troubleshooting hardware? select the best answer.
check your power source and be sure the battery and brain are connected
check that the controller is powered on and paired
check that cables are connected to devices and ports correctly
all of these

Explanation:

When troubleshooting hardware, checking the power source and connections (battery - related, controller power - on and pairing, and cable connections) are all common and recommended steps.

Answer:

D. All of these