Question

the length of time it takes a planet to revolve around the sun is equivalent to witch of the following?

Answer 1

The length of its year.

Step-by-step explanation:

When Earth completes a full rotation, a year has completed. So, the same can be the same for other orbiting planet. The moon for example takes 29.5 days to revolve around the Earth, so one moon year is 29.5 Earth days.

Answer 2

it really depends on how far or close the planet is from the sun