Question

question: 23
a year on jupiter is 4,333 days long. a year on mercury is 88 days long. why do planets have diff years?
o a year is longer on larger planets.
o each planet has its own orbital period.
o some planets are larger than other planets.
o planets exert a gravitational force on other planets.

Explanation:

A year on a planet is determined by its orbital period (the time it takes to complete one orbit around the Sun). Planets have different distances from the Sun and thus different orbital periods. Option A is incorrect because the size of the planet does not determine the length of its year. Option C just states a general fact about planet sizes but does not explain the difference in years. Option D is about gravitational forces between planets, which is not related to the length of a planet's year.

Answer:

B. Each planet has its own orbital period.