The correct answer indicates the sequence of the states in descending order of their available ground water resources for irrigation. This means that the state labelled as `4` has the most ground water resources available for irrigation while the state labelled as `1` has the least.

Option 1 gives the sequence as 3, 4, 1, 2. This means it suggests that the state labelled `3` has the most ground water resources and the state labelled `2` has the least, which does not match the correct answer.

Option 2 suggests that state `3` has the most resources and state `1` has the least. Again, this differs from the correct answer.

Option 3 suggests that state `4` has the most ground water resources for irrigation and state `2` has the least. While the state with the most resources matches the correct answer, the state with the least does not.

Option 4 is the correct answer as it matches the sequence of ground water resources for irrigation from most (state `4`) to least (state `1`). It`s important to understand that the sequence is about the quantity of ground water resources available for irrigation and not about their physical size or population.