Step 1: Understanding population density.
Population density is measured as the number of persons per square kilometre of area. A higher density indicates that more people are concentrated in a limited space.
Step 2: Analyzing the given states.
- (A) Kerala → Has high literacy and health indicators, but its density is lower than West Bengal.
- (B) Punjab → Primarily agricultural, population density is comparatively moderate.
- (C) Uttar Pradesh → The most populous state, but its density is slightly less than West Bengal due to its larger land area.
- (D) West Bengal → Has the highest density of population in India because of fertile plains, industrial growth, and urbanization.
Step 3: Conclusion.
Thus, the state with the highest population density is West Bengal.
\[
\boxed{\text{West Bengal}}
\]
Study the following graph carefully and answer the following questions