Which bar graph best represents the equatorial diameters of the eight planets of our solar system?

The First one/ A /Top Left corner

Explanation:

Equatorial distance shows the size of a planet. The larger the distance, the larger the planet.

Option A puts Jupiter as having the largest distance which is correct as Jupiter is the largest planet and is followed by Saturn and then Uranus and Neptune in that order.

Option A also shows Earth as being larger than Mars, Venus and Mercury which is accurate as well.

Option A is the best choice.