Questions: Which of the following voting restrictions increases the burden on citizens who move frequently? - voting by mail - closing the polls at 6 PM - changes in voting districts - voter registration requirements

The answer is: voter registration requirements.

Explanation for each option:

1. Voting by mail: This option generally provides more flexibility for voters, especially those who move frequently, as they can receive their ballots at their new address. It does not inherently increase the burden on such citizens.

2. Closing the polls at 6 PM: While this can be inconvenient for people with inflexible work schedules, it does not specifically target or increase the burden on citizens who move frequently. It affects all voters equally, regardless of their mobility.

3. Changes in voting districts: While changes in voting districts can cause confusion, they do not directly increase the burden on citizens who move frequently. These changes affect all residents of the district, not just those who have recently moved.

4. Voter registration requirements: This is the correct answer. Citizens who move frequently may face increased burdens due to the need to update their voter registration information each time they change their address. This can involve additional paperwork and deadlines, which can be challenging to manage for those who move often.