Concept: The correct option completes the common expression used when something is offered for sale.Explanation: The sentence shows that the properties were available for purchase before the fire destroyed them.The fixed phrase "up for sale" means that an item is offered or made available to buyers."Up on" means being well informed about something."Out for" suggests seeking or trying to obtain something."Down on" indicates hostility or disapproval toward someone or something.Therefore, only "up for" gives the intended meaning.Answer: A. up for