The correct answer is option 4 - 5 states. This means that there are 5 states in which at least 50% of the villages have access to electricity.

Option 1 - 1 state: This option suggests that only one state has at least 50% electrified villages. This is incorrect because the correct answer is 5 states.

Option 2 - 2 states: This option suggests that only two states have at least 50% electrified villages. This is incorrect because the correct answer is 5 states.

Option 3 - 3 states: This option suggests that only three states have at least 50% electrified villages. This is incorrect because the correct answer is 5 states.

The correct answer, option 4 - 5 states, implies that there are five states where at least 50% of the villages have access to electricity.

Overall, the correct answer is 5 states.