Leap years are needed because
A)the earth's orbit is not a perfect circle.
B)the length of the day varies.
C)the length of the year varies.
D)the length of the year is not a whole number of days.

Question

Quizplus · Accepted Answer

The length of the year is not a whole number of days, with the actual length being about 365.2422 days. This is why, every four years, a leap day is added to the calendar to make up for the extra fraction of a day that accumulates each year.

Leap Years Are Needed Because