Explanations:Arunachal Pradesh, located in the northeastern part of India, is characterized by its abundant water resources and significant infrastructural challenges. The state is situated in the eastern Himalayas, which are known for their rich water resources, including numerous rivers and streams. The Brahmaputra River, one of the major rivers in India, originates in Tibet and flows through Arunachal Pradesh, providing a vast amount of water resources for the state.
Despite its abundant water resources, Arunachal Pradesh faces significant infrastructural challenges. The state's rugged and mountainous terrain makes it difficult to develop and maintain infrastructure such as roads, bridges, and other essential facilities. The state's remote location and difficult terrain have historically hindered the development of transportation networks, which are crucial for economic growth and connectivity. Additionally, the state's economy is largely dependent on agriculture and forestry, which are less capital-intensive and do not require extensive infrastructure compared to industrial or service sectors.
Other states like Uttar Pradesh, Gujarat, and Haryana have more developed infrastructures. Uttar Pradesh, being one of the most populous states in India, has significant agricultural and industrial development, including a well-developed road network and other infrastructure. Gujarat, known for its industrial development, has made significant strides in infrastructure development, including the construction of the Sardar Sarovar Dam, which is a major water resource project. Haryana, located in the National Capital Region, has a well-developed infrastructure, including a robust transportation network and industrial zones.
Therefore, Arunachal Pradesh stands out as the state with abundant water resources but lacking in infrastructural development, making it the correct answer to the question.