Concept:Mercury is the closest planet to the Sun, so its orbital path is the shortest and its year is the fastest among all planets.
Explanation:Mercury takes
88 Earth days to complete one full orbit around the Sun.
This length of time is called Mercury's orbital period, or simply its year.
Because Mercury is so near the Sun, it travels along a short orbital path at a very high speed.
This makes its year much shorter than Earth's year, which is
365 days.
Looking at the options,
365 days is Earth's orbital period, while
225 days is Venus's orbital period.
The value
84 does not match Mercury's orbital period.
Only
88 days correctly describes the time Mercury needs to circle the Sun once.
Answer:Mercury completes its orbit in
88 days.
Correct option: B.
88