The correct answer is A) stern to the pier. In a Mediterranean Moor, the vessel is moored with its stern facing the pier or dock. This allows the vessel to be secured in a parallel position to the pier, with the stern lines and spring lines securing the back of the vessel to the pier. This mooring configuration is commonly used in tight spaces or where the depth of water does not allow the vessel to be moored bow-first. The other options are incorrect because: B) bow to the pier is not a Mediterranean Moor, C) anchors crossed is not a standard mooring configuration, and D) anchor chains forward, side to the pier does not accurately describe a Mediterranean Moor.