The correct answer is: A. Ranchi
Rock Garden is a sculpture garden located in the heart of Ranchi, the capital of Jharkhand, India. It was created by Nek Chand Saini, a self-taught artist who began work on the garden in 1957. The garden is made up of over 2,000 sculptures, all of which were created from stones, rocks, and other found objects. The sculptures are arranged in a series of gardens and courtyards, and they depict a variety of themes, including animals, birds, flowers, and people. Rock Garden is a popular tourist destination, and it is considered to be one of the most unique and interesting gardens in the world.
Option B is incorrect because Bokaro is a city in Jharkhand, but Rock Garden is not located there.
Option C is incorrect because Latehar is a district in Jharkhand, but Rock Garden is not located there.
Option D is incorrect because Jamshedpur is a city in Jharkhand, but Rock Garden is not located there.