Which of the following solar system objects has the most circular orbit? OEarth OVenus Mercury O Pluto

Venus - has the most circular orbit.

Explanation:

Eccentricity -

Eccentricity is used to define the circularity of an object.

Lesser the value of eccentricity of the orbit, more circular will be its orbit

and,

More the value of eccentricity of the orbit, less circular will be its orbit.

In case, the value of eccentricity is zero, the orbit will be a perfect circle.

Hence,

by considering the eccentricity value of the following plants as -

Venus 0.007

Earth 0.017

Mercury 0.206

Pluto 0.248

Venus has the most circular orbit, as it has the minimum eccentricity value, i. e., 0.007.