Which sentence sets an informal tone?

Question

When the room has been cleared, we need to develop an agenda for the meeting.
Once the room has been cleared, we can establish the protocol for the meeting.
When the room is clear, let's get organized and plan the meeting.
Once we have removed the press from the room, we can create a strategy for the meeting.

Answer 1

And your answer is?

Answer 2

When the room is clear, let's get organized and plan the meeting.

Answer 3

I agree.

Answer 4

thank you

Answer 5

You're welcome.