________ is the year in which the month of February has 29 days.
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Leap year
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Yacht year
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Stone year
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Year of 29 days
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None of these
A
Correct answer
Explanation
A leap year occurs every 4 years when February has 29 days instead of 28, adding an extra day to keep the calendar synchronized with Earth's orbit. The other terms (Yacht year, Stone year, Year of 29 days) are not real calendar terms. This is a basic concept in the Gregorian calendar system.