The correct answer is (c), 2022.
A year has a similar calendar to another year if it has the same number of days in each month and the same number of leap days. 2011 is a common year, which means it has 365 days. It is not a leap year, which means it does not have an extra day in February.
2022 is also a common year. It has 365 days and does not have an extra day in February. Therefore, 2022 has a similar calendar to 2011.
2020 is a leap year. It has 366 days, including an extra day in February. 2021 is also a common year. It has 365 days and does not have an extra day in February. 2023 is a leap year. It has 366 days, including an extra day in February.
Therefore, the only year that has a similar calendar to 2011 is 2022.