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: How deep is the body of water where Audrey's formation was first noticed? Passage 1:Pocock joined the Royal Air Force in 1974. He served as Officer Commanding Support Wing at the joint RAF and Army base at Akrotiri before becoming briefing officer to the Chief of the Air Staff. He went on to be Group Captain in charge of the RAF estate in 1996, Air Commodore Plans at RAF Logistics Command in 1997 and Air Commodore Plans and Policy at RAF Personnel and Training Command in 1999. He became Officer responsible for Defence Pay & Allowances in 2000, Head of the Service Personnel Change Programme with promotion to air vice-marshal in January 2003 before serving as Defence Services Secretary and Assistant Chief of Defence Staff (Personnel and Reserves) from 2004 to 2005. He was promoted to air marshal in July 2005 and became Deputy Chief of the Defence Staff (Personnel) and retired in 2007. He was appointed Companion of the Order of the Bath (CB) in the 2008 New Year Honours.
 Passage 2:Allison co-founded D Magazine -- a monthly magazine covering Dallas -- in 1974, with backing from Dallas investor Ray Lee Hunt. In 1981, he and a group of investors purchased Sport Magazine, which they sold in 1984. He went on to found and publish Art & Antiques in 1984. In 1985, Allison was asked by William F. Buckley, Jr. to join the board of directors of the National Review, and in 1980 he became its publisher, succeeding William A. Rusher. In 1981 or 1982 Allison sold his company Allison Publications, publisher of Art & Antiques. In 1993, he resigned as publisher of National Review. In 1995, he and investor Harlan Crow repurchased D Magazine, and in 2001, Allison bought out Crow to become the magazine company's sole owner. In 1993, Allison edited a new edition of The Bible To Be Read As Living Literature, published by Simon & Schuster. He is also the author of Is That In The Bible? (Dell, 1992) and Condemned To Repeat It: History Lessons For Leaders (Viking Penguin, 1998).
 Passage 3:The formation and development of Hurricane Audrey was multi-faceted. One contributor to Audrey's formation—an area of anomalously low pressures roughly above sea level—was traced back to its first detection in the western Caribbean Sea on June 11. In an analysis of weather patterns from June 1957, Weather Bureau meteorologist William H. Klein noted the potential for research on similar disturbances to shed light on tropical cyclone development. Concurrently, surface observations suggested the progression of a disorganized tropical wave tracking westward across the Caribbean Sea beginning on June 20, eventually entering the Bay of Campeche on June 22. At 12:00 UTC on June 24 (7:00 a.m. CST), the resulting disturbance organized into a tropical depression based on ship reports in the bay; at the time, the first indication of a developing tropical cyclone originated from a report from a shrimp boat. The depression was in a highly favorable environment for intensification in the western Gulf of Mexico; sea surface temperatures in the area were at , or 3 °F (2 °C) above normal for the time of year. In addition, the latitudinal alignment of a polar trough over the Great Plains and the nascent disturbance in the Bay of Campeche created an environment suitable for outflow in the upper-levels of the atmosphere. Taking advantage of these conditions, Audrey reached tropical storm strength just six hours after being classified as a tropical depression while remaining nearly stationary.

A:
3