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 population of the town that VT 15 enters when it becomes known as College Parkway. Passage 1:VT 15 begins as East Allen Street in the center of Winooski at the rotary-style intersection with Main Street (US 2 and US 7). It proceeds east for to a partial interchange with I-89 (at Exit 15). Right after the I-89 junction, VT 15 enters the town of Colchester, with the road becoming known as College Parkway. It runs for only in Colchester, passing by the Fort Ethan Allen military installation before entering the village of Essex Junction in the town of Essex. In Essex Junction, the road is known as Pearl Street and continues for about two miles (3 km) to the "Five Corners" intersection with VT 2A and VT 117 at the village center, near the Essex Junction-Burlington railroad station. It turns left onto Main Street at the village center and continues northeast out of the village for to a junction with the VT 289 expressway (at Exit 9). From there it continues east through Essex Center along Center Road and Jericho Road as it heads into the town of Jericho, soon entering the village of Jericho. As VT 15 continues past the village, it turns northward to enter the town of Underhill. It runs for about eight miles (13 km) in a northerly direction through mostly rural areas in the towns of Underhill and Westford before finally entering the town of Cambridge.
 Passage 2:On 15 February 1946, Laskov immigrated to Brno, Czechoslovakia, where he studied medicine at the Masaryk University and played for SK Židenice, the modern 1. FC Brno. In 1947, he moved to Bratislava, where he married a Slovak beautician and was granted Czechoslovak citizenship. In Bratislava, he played for ŠK Slovan Bratislava between 1947 and 1952, winning the Czechoslovak First League in 1949, 1950 and 1951. In Czechoslovakia, he has also played for FK Inter Bratislava (then Cervena Hviezda) and TTS Trenčín players, until 1960. In the Czechoslovak Championship, he played a total of 169 games, of which 98 (with 48 league goals) for Slovan; he also featured in 3 games for the Czechoslovakia national football team. He was awarded several fair play prizes in Czechoslovakia. Later on, he worked as a manager, managing FK Inter Bratislava, FC Spartak Trnava and Trenčín. He also served as a professional physician specialized in otolaryngology and was an active member of the Bulgarian association in Slovakia.
 Passage 3:Keity Souza Santos is an immunologist working at the allergy and immunology department of the University of São Paulo's school of medicine. Santos stated that she was the first person in her family to express interest in science as a career. She was inspired to become a biologist by the story of Dolly the sheep, the first mammal clone. She received her Bachelor's Degree in Biological Sciences from the University of São Paulo in 2003, and her doctorate in Allergy and Immunopathology in 2008 from the same institution. During her doctorate, she worked to find an anti-venom for the sting of Apis mellifera, which is also called the "Africanized honeybee." She did post-doctoral work in Salzburg, in Austria, and at Cornell University in Ithaca, in the USA. Her later work has been on identifying venom proteins in various insect stings, and in some cases, identifying the damage that they cause to tissues in the human body.
1