Given the task definition and input, reply with output. 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: What is the highest elevation in the mountain range that candidates found difficult to traverse? Passage 1:Shreveport was once a major player in United States oil business, and at one time could boast Standard Oil of Louisiana as a locally based company. The Louisiana branch was later absorbed by Standard Oil of New Jersey. Beginning in 1930, United Gas Corporation, the nation's busiest pipeline operator and massive integrated oil company, was headquartered in Shreveport. Pennzoil performed a hostile takeover in 1968, and forced a merger. In the 1980s, the oil and gas industry suffered a large economic downturn. This affected all of the regional economy, and many companies cut back jobs or went out of business, including a large retail shopping mall, South Park Mall, which closed in the late 1990s. Its major facilities were adapted for use by Summer Grove Baptist Church. Shreveport suffered severely from this recession, and many residents left the area. Since that time, Shreveport has largely transitioned to a service economy. In particular, there has been rapid growth in the gaming industry. The city hosts various riverboat gambling casinos, and, before Hurricane Katrina in 2005, was second only to New Orleans in Louisiana tourism. Nearby Bossier City is home to one of the three horse racetracks in the state, Harrah's Louisiana Downs. Casinos in Shreveport-Bossier include Sam's Town Casino, Eldorado Casino, Horseshoe Casino, Boomtown Casino, Diamond Jacks Casino (formerly Isle of Capri), and Margaritaville Resort Casino. The Shreveport-Bossier Convention and Tourist Bureau is the official tourism information agency for the region. The bureau maintains a comprehensive database of restaurants, accommodations, attractions, and events.
 Passage 2:McCray worked at Paramount Pictures studio in New York, for four years. She did no original writing during that time, but did some continuity writing, and, fluent in French, she worked on the French adaptation of Honor Among Lovers (then known as Strictly Business). She moved to Paris, France, in about 1931. Using the name Peggy Thompson, she worked for the Vandor Company on the English version of Don Quixote (1933). She also wrote the story on which the film  (1935) was based. Her original title for it was A Kiss in the Dark, and she sold it for $5,000. A contemporary review also credits Peggy Thompson for "cutting" (ie editing) the film, along with E. T. Gréville and Curt Alexander. The film had made about $2,000,000 by the end of 1939, and McCray expressed regret that she had not sold it for a percentage of its earnings. During 1935, she worked in England with Basil Dean at Associated Talking Pictures, Ealing. There, she wrote the scenario for Midshipman Easy and assisted with the adaptation of Eleanor Smith's novel Ballerina for the screen (its film title was The Men in Her Life). She also wrote skits for Gracie Fields.
 Passage 3:During the 1780s and 1790s, German-speaking Lutherans began to move west from the original 13 states on the Atlantic coast into the portion of the old Northwest Territory formed 1787, that is now the future state of Ohio (and included territories north of the Ohio River, future states of Indiana, Illinois, Michigan, Wisconsin, and eastern Minnesota), with the numbers increasing after Ohio gained statehood in 1803. The Pennsylvania Ministerium sent two itinerant Lutheran pastors, Wilhelm Georg Forster and Johannes Stauch, to minister to the immigrants. By 1818 the Ministerim has sent another ten pastors, including Paul Henkel and John Michael Steck. These pastors began meeting together as the Ohio Conference of the Pennsylvania Ministerium, with the first convention on October 17–19, 1812, in Washington County, Pennsylvania. and the last on September 20–24, 1817, in New Philadelphia, Ohio. However, the Ohio Conference was not an independent synod, and so any candidates for the pastoral office were required to go to Pennsylvania for ordination. Most candidates found it difficult to make that trip across the Appalachian Mountains, so instead the Ohio Conference merely licensed them to preach. In order to remedy this, the conference asked for and received permission from the Pennsylvania Ministerium to form a new synod, and on September 14, 1818, in Somerset, Ohio, the General Council of the Evangelical Lutheran Preachers in Ohio and the Adjacent States () was organized.
3