Wonderlic Cognitive Ability Practice Test 2025 – The Complete All-in-One Guide to Exam Success!

The sun is the largest object among the choices listed, with a diameter of about 1.4 million kilometers. This immense size makes it significantly larger than the other celestial bodies mentioned.

In comparison, Earth has a diameter of approximately 12,742 kilometers, Venus is similar in size to Earth at about 12,104 kilometers, and the moon has a much smaller diameter of about 3,474 kilometers. The sun's vast size is crucial not only for understanding its gravity and light projection in our solar system but also for its role as the central star around which all planets, including Earth and Venus, orbit. This significant difference in size directly establishes the sun as the object with the biggest diameter in this context.