Ans: Door M, i.e. Mummy.

Well when you hear the word TOMB, MUMMY reference comes too. And after a stormy night, no one's brain would really work and for anyone the safest place with be near their mom. Hence, M lol 🙈🙈🙈
I know it's lame.

A/N: At first, I kind of thought that I would just say 'which door to chose and ask why?' But then that was kinda too easy and I knew with the TOMB reference, everyone could guess M instantly. But now it was too hard.  Oh well! 😁😁😁