Among the given options, option 4, Tamil Nadu, is the most urbanized state. Urbanization refers to the process of the growth and expansion of urban areas. This includes the increase in population residing in cities and towns, as well as the development of infrastructure and facilities in these areas.

While all the options mentioned have a significant level of urbanization, Tamil Nadu stands out as being the most urbanized. This can be attributed to several factors, such as its well-developed cities like Chennai, Coimbatore, and Madurai, which have a high concentration of urban population and provide various amenities and services.

It is important to note that urbanization levels can be measured by factors such as the percentage of the population living in urban areas, the density of urban population, and the level of infrastructure and facilities available. However, without further data or clarification, it is impossible to provide a more detailed analysis or comparison between the states in terms of their urbanization levels.

In summary, among the given options, Tamil Nadu is considered the most urbanized state.