In India, the concept of a uniform civil code refers to the idea of having a common set of laws for all citizens, regardless of their religion. The correct answer to the question is option 4, Goa. Goa is the only state in India that has implemented a uniform civil code. This means that all residents of Goa, regardless of their religion, are governed by the same set of personal laws related to marriage, divorce, inheritance, and adoption. In other states of India, personal laws based on religious practices are followed by individuals belonging to different religions. It is important to note that the implementation of a uniform civil code in India has been a topic of debate and discussion for many years. The aim is to promote equality and eliminate discrimination in personal laws based on religion.