The correct answer is Ludhiana.
Ludhiana is a city in the Indian state of Punjab. It is the largest city in the state and the 12th largest city in India. Ludhiana is known for its hosiery industry, which is the largest in India. The city is also home to a number of other industries, including engineering, manufacturing, and pharmaceuticals.
Patiala is a city in the Indian state of Punjab. It is the second largest city in the state and the 14th largest city in India. Patiala is known for its culture and heritage. The city is also home to a number of educational institutions, including Punjabi University.
Jalandhar is a city in the Indian state of Punjab. It is the third largest city in the state and the 15th largest city in India. Jalandhar is known for its sports, especially hockey. The city is also home to a number of educational institutions, including Guru Nanak Dev University.
Amritsar is a city in the Indian state of Punjab. It is the fourth largest city in the state and the 16th largest city in India. Amritsar is known for its Golden Temple, which is one of the most important pilgrimage sites for Sikhs. The city is also home to a number of other historical and religious sites.