Q: In this task, you're given a question, along with three passages, 1, 2, and 3. Your job is to determine which passage can be used to answer the question by searching for further information using terms from the passage. Indicate your choice as 1, 2, or 3.
Question: Is the person who discovered Pluto an American? Passage 1:Pluto was discovered by Clyde W. Tombaugh on 18 February 1930. When Pluto was first discovered, it was initially known as Planet X. Astronomers had been searching for another planet past Neptune, hoping to solve the dilemma of its rather irregular orbit. It is now known, however, that the perceived irregular orbit of Neptune was the result of a mathematical error because Pluto, being a planetoid smaller than our own Moon, was far too small to affect any type of gravitational pull on the gas giant. Pluto is very much a 20th-century planet and refers to the two world wars, and weapons of mass destruction, nuclear power, and a desire to totally control the world we live in. It is a planet that reveals to us the extremes we are capable of if we do not set necessary boundaries in our lives. This planet governs the compulsions in our life: those things we are compelled to do but know we should not, such as murder, rape, drug addiction, and even overeating if it is of such an extent that it threatens our health. Pluto is considered to be a higher octave of Mars, and this is evidenced by the fact that both planets co-rule Scorpio. Pluto, circling the Sun in 248 years, has a rather elliptical orbit, which means that it stays in the sign it rules, Scorpio, for a mere 9 years, and the sign of its fall, Taurus for 30! With this in mind, some astrologers believe that Pluto should rightfully rule Taurus, but for the time being it still rules Scorpio. As other trans-Neptunian object planets are discovered, however, this placement just might have to be reconsidered.
 Passage 2:Rear Admiral Herbert James Ray (1 February 1893 – 3 December 1970) was an officer in the United States Navy who served in World War I and World War II. A 1914 graduate of the Naval Academy, he served on the submarines and during World War I. In March 1942, as Chief of Staff and Aide to the Commandant of the Sixteenth Naval District, Rear Admiral Francis W. Rockwell, he participated in General Douglas MacArthur's escape from the Philippines. In Australia, he served with MacArthur's General Headquarters, Southwest Pacific Area staff. In September 1943, he became Captain of the battleship , which he commanded in the Battle of Tarawa, Battle of Kwajalein, Battle of Saipan and the Battle of Peleliu. In October 1944, he participated in the Battle of Surigao Strait, in which Maryland joined the other battleships in engaging the Japanese battleships and and their escorts. Ray left Maryland in December 1944, and was appointed Deputy Director of the Naval Division of the US Control Group Council for Germany. After VE Day, he became the Junior United States Member of the Tripartite Naval Commission in Berlin. He retired from the Navy on 30 June 1949, and received a tombstone promotion to rear admiral due to his combat decorations.
 Passage 3:On February 7, 1917 Satō was assigned command of the 2nd Special Task Fleet, a task force of Japanese destroyers deployed to Malta in the Mediterranean as part of Japan’s assistance to the Allied war effort under the Anglo-Japanese Alliance. Sato commanded two squadrons of 17 destroyers from aboard the flagship , patrolling the eastern Mediterranean from Alexandria to Marseilles and from Alexandria to Taranto against the Imperial German Navy and Austro-Hungarian Navy. His forces escorted convoys of merchant vessels and troopships, and performed anti-submarine warfare duties. Future admirals Tamon Yamaguchi and Raizō Tanaka were members of his staff. These operations were under the overall command of Royal Navy Admiral Sir Somerset Gough-Calthorpe, and Rear Admiral George A Ballard, who highly praised Satō in dispatches to London. The Japanese ships were at sea on combat duty on average 25 days or more each month. The Japanese Navy spent 72 percent of their time at sea compared with 60 percent by the British and about 45 percent by the French and Italian Navy.

A:
1