In astronomy, the Earth's orbit around the Sun takes about one what?

In astronomy, the Earth's orbit around the Sun takes about one what?

• A. Yearly (annually)
• B. Decade
• C. Century
• D. Millennium

Answer: (A)

The time being tested is the orbital period of Earth around the Sun, which defines a year. It takes about one year—roughly 365 days—for Earth to complete one full orbit and return to the same position in its path around the Sun. That’s why our calendar uses a year as its basic unit, with leap years added every few years to account for the extra fraction of a day per orbit and keep the calendar in sync with the seasons. The other options describe much longer spans (ten years, a hundred years, a thousand years) and do not correspond to one full orbit around the Sun.

The time being tested is the orbital period of Earth around the Sun, which defines a year. It takes about one year—roughly 365 days—for Earth to complete one full orbit and return to the same position in its path around the Sun. That’s why our calendar uses a year as its basic unit, with leap years added every few years to account for the extra fraction of a day per orbit and keep the calendar in sync with the seasons. The other options describe much longer spans (ten years, a hundred years, a thousand years) and do not correspond to one full orbit around the Sun.