Which one of the following is the correct sequence of the given planets in increasing order of their size (diameter) ?

The planets in our solar system vary significantly in size. Mercury is the smallest planet with a diameter of approximately 4,879 km. Mars follows as the second smallest, with a diameter of about 6,779 km to 6,794 km. Venus, often referred to as Earth's twin due to its similar size, has a diameter of approximately 12,104 km. Earth is slightly larger than Venus, with a diameter of about 12,742 km to 12,756 km. Among the planets listed in the options, Uranus is significantly larger than the inner rocky planets, possessing a diameter of approximately 50,724 km to 51,118 km. Therefore, the correct increasing order of size by diameter is Mercury, Mars, Venus, Earth, and Uranus.