Answer:
The word that correctly completes the sentence is livable. Because of the fallen tree, the gas leak, and the mouse invasion, this house is not actually livable.
Step-by-step explanation:
The adjective livable defines a building, house, or any other place that is suitable for living in. That is to say, that the place is habitable. In this sentence, since the house has a fallen tree, a gas leak and a mouse invasion, one may easily say the house is not livable.