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: How many students are enrolled at the college where Wright studied physics? Passage 1:Lord Haddington was succeeded accordingly by his second son Thomas, the sixth Earl. He obtained a new charter of the earldom. He sat in the House of Lords as a Scottish Representative Peer from 1716 to 1735 and served as Lord-Lieutenant of Haddingtonshire from 1716 to 1735. He was also appointed Hereditary Keeper of Holyrood Palace. His eldest son Charles Hamilton, Lord Binning, married Rachel (died 1773), daughter of George Baillie, of Mellerstain House and Jerviswood. Through this marriage Mellerstein House and the Jerviswood estate came into the Hamilton family. Lord Binning predeceased his father. Lord Haddington was therefore succeeded by his grandson, Thomas the seventh Earl (the eldest son of Lord Binning), who married Mary Lloyd, née Holt (great-niece of Sir John Holt, Lord Chief Justice 1689-1709). On his death the titles passed to his son Charles, the eighth Earl. He was a Scottish Representative Peer from 1807 to 1812 and Lord-Lieutenant of Haddingtonshire from 1804 to 1823. He was succeeded by his son, the ninth Earl. He was a Tory politician and served as Lord-Lieutenant of Ireland from 1834 to 1835 and as First Lord of the Admiralty (with a seat in the cabinet) from 1841 to 1846. In 1827, one year before he succeeded his father in the earldom, he was created Baron Melros, of Tyninghame in the County of Haddington, in the Peerage of the United Kingdom.
 Passage 2:Born in Toronto, Ontario, Canada in 1887, the son of an insurance executive, Wright grew up in the Toronto neighbourhood of Rosedale. He was educated at Upper Canada College where he also became head boy. Despite wearing glasses, he excelled in sports and his spirit of adventure saw him spend some of his youth prospecting and canoeing in Canada's unmapped Far North. He studied Physics at the University of Toronto and won a scholarship for postgraduate study at Gonville and Caius College, Cambridge, England, undertaking research in cosmic rays at the Cavendish Laboratory from 1908-10. There he met Douglas Mawson, who had recently returned from Shackleton's 1907-9 British Antarctic Expedition, known as the Nimrod Expedition. Upon learning of Scott's forthcoming expedition to the geographic South Pole, Wright applied to join but was rejected. Undaunted, he walked from Cambridge to London, where he applied in person; this time, Scott accepted, and Wright was hired as expedition glaciologist and assistant physicist.
 Passage 3:Just south of the village center is Mount Prospect, summer home to Senator John W. Weeks, who sponsored congressional legislation creating White Mountain National Forest. In 1910, he purchased several farms to assemble the estate. It is now Weeks State Park, which features a fire lookout and his mansion, open for tours during the summer. A ski rope tow operates on the slope in winter. Many of the White Mountains and Green Mountains can be seen from the stone observation tower built in 1912 atop the summit. The Presidential Range is to the southeast, with the Franconia Range to the south. Mount Weeks, elevation , is in the Kilkenny Range to the northeast. It is named for the senator, as is the Weeks Medical Center. Weeks Memorial Library, a Beaux Arts landmark listed on the National Register of Historic Places in 2000, was given by John W. Weeks in memory of his father, William Dennis Weeks.
2