Arrange the words given below in a meaningful sequence. 1. Key 2. Door 3. Lock 4. Room 5. Switch on

The logic followed here is:

1. Key - This is the starting point, used to unlock the lock.

3. Lock - The key is used to unlock the lock.

2. Door - Once the lock is unlocked, the door can be opened.

4. Room - After opening the door, you enter the room.

5. Switch on - Inside the room, you switch on the light.

So, the order would be: 1, 3, 2, 4, 5.

Hence, the correct answer is "Option 3".