Answer:
Venus
Explanation:
The solar system has total eight planets. The first four planets are inner planets. They have rocky surface. These are- Mercury, Venus, Earth and Mars.
Mercury and Venus do not have moons. Mercury is the smallest planet. Venus has the same size as Earth. It also has a very thick atmosphere which has mostly carbon dioxide.
Mars is smaller in size than Earth and has two moons-Phobos and Deimos.
Thus, the correct answer is Venus.
