Respuesta :
There is no doubts that the place that was used to avoid persecution, where would early Christians meet, hide out, and bury their dead is catacombs. Rest of options are too predictable and create the risk to be caught for believers. And the only place where they could protect theis belief was deep under the ground.
D. Catacombs {I like helping and I give 5 star + thanks for people with correct answers}