Read the excerpt below: It is in the clay part of Kent, and my bungalow stood on the edge of an old sea cliff and stared across the flats of Romney Marsh at the sea. In very wet weather the place is almost inaccessible, and I have heard that at times the postman used to traverse the more succulent portions of his route with boards upon his feet.
In the excerpt above from The First Men in the Moon, which element of setting is being described?

time
historical period
place
social conditions