Finish the following sentence with the best choice: How to lock a door from the inside

Choices:
- Close the door. Turn the knob on the lock in the appropriate direction to lock it. Test the door by twisting the knob and see if it opens.
- Open the door the door. Turn the knob on the lock in the appropriate direction to lock it. Test the door by twisting the knob and see if it closes.

Answer:
Close the door. Turn the knob on the lock in the appropriate direction to lock it. Test the door by twisting the knob and see if it opens.