The Census in Manipur faces challenges due to:

The correct answer is: All of the above.

The Census in Manipur faces challenges due to the following reasons:

• Hilly terrain: The state of Manipur is located in the northeastern part of India and is characterized by its hilly terrain. This makes it difficult to access some parts of the state, which can hinder the census process.
• Remote areas: There are also many remote areas in Manipur, which can make it difficult to reach these areas and conduct the census.
• Linguistic diversity: Manipur is a linguistically diverse state, with over 30 different languages spoken. This can make it difficult to communicate with the people and collect accurate data.

These challenges can make it difficult to conduct a successful census in Manipur. However, the government has taken steps to address these challenges, such as using helicopters to reach remote areas and providing interpreters for different languages.