Push the switch SW0 at position 'a' i.e. green indication and observe that irrespective of door position, the alarm system is disabled and output LED turns GREEN.

Now set the switch SW0 at position 'b' (i.e. grey position). The alarm system is enabled. Then change the switch positions SW1, SW2, SW3 and SW4 to simulate the open/close door status and observe when the alarm sounds. The alarming condition is shown with the help of output LED turning RED.

If any or all the doors are opened (SW showing RED indication), then check whether you can LISTEN to the output ALARM & verify the result.

Using simulator build the automobile alarm circuit by using two input gates and verify the result. Use green LED as output indicator.
https://youtu.be/ItkTeBK7_Qg