Answer :
The correct answer is:
1. Leap years are included in the calendar because the actual year is 365 and one-fourth days. This means that to keep our calendar in sync with the Earth's orbit around the sun, we need to add an extra day to the calendar approximately every four years. This extra day is added to the month of February and is known as February 29th.
This adjustment ensures that our calendar year (known as the Gregorian calendar) stays aligned with the actual time it takes for the Earth to orbit the sun. Without leap years, over time, our calendar would drift out of sync with the seasons.
Therefore, leap years play a crucial role in maintaining the accuracy of our calendar system and keeping our timekeeping in line with the astronomical cycles of the Earth.
