The correct answer is (a) Lucknow.
Bharatmata Mandir is a Hindu temple dedicated to Bharat Mata, the personification of India. It is located in Lucknow, the capital of the Indian state of Uttar Pradesh. The temple was built in the early 20th century by Babu Shiv Prasad Gupta, a freedom fighter and social reformer.
The temple is a large complex with several buildings, including a main temple, a library, and a museum. The main temple is a three-tiered structure with a golden dome. The walls of the temple are decorated with murals depicting scenes from Indian history and mythology.
The Bharatmata Mandir is a popular tourist destination and a place of pilgrimage for Hindus. It is also a symbol of Indian nationalism and pride.
The other options are incorrect because:
(b) Varanasi is a city in the Indian state of Uttar Pradesh. It is one of the oldest cities in the world and is considered to be a holy city by Hindus.
(c) Allahabad is a city in the Indian state of Uttar Pradesh. It is located on the confluence of the Ganges, Yamuna, and Saraswati rivers. It is a major pilgrimage destination for Hindus and is also known for its annual Kumbh Mela festival.
(d) Meerut is a city in the Indian state of Uttar Pradesh. It is located in the northern part of the state and is a major industrial and commercial center.