The correct answer is D) Machinery space, port side, frame 131. The location of the fire pump(s) is typically found in the machinery space, on the port side, at frame 131. This is a common configuration for the placement of fire pumps on commercial vessels, as it provides easy access and a centralized location for this critical safety equipment. The other answer choices are incorrect because they do not accurately reflect the standard location of fire pumps on commercial vessels. Auxiliary machinery spaces, the starboard side, and frames other than 131 are not the typical locations for fire pumps.