Which statement describes an open circuit?
the circuit is incomplete and broken, and the lights in the circuit shine./ the circuit is complete and unbroken, and the lights in the circuit shine./ the circuit is incomplete and broken, and the lights in the circuit do not shine./ the circuit is complete and unbroken, and the lights in the circuit do not shine.

Open circuit means the circuit is incomplete and broken, and the lights in the circuit do not shine.

Explanation :

An electric circuit is a graphical representation of the current flow. The electric circuit can be open circuit and closed circuit.

The incomplete path of an electric circuit which is due to an open switch is called open circuit.

In an open circuit, no electric current flow and hence no power loss occurs.

Hence the correct option is (c) " The circuit is incomplete and broken, and the lights in the circuit do not shine".

The answer is C: The circuit is incomplete and broken and the lights in the circuit do not shine.

one "light year" is the distance that light travels, through vacuum, in one julian year.   that's 365.25 days, of 24 hours each.