The correct answer is option 2, which states that Mercury and Venus do not have satellites revolving around them. This means that these two planets do not have any natural moons orbiting around them.
To further understand the options, let`s look at the other choices:
- Option 1 states that Mars and Venus do not have satellites, which is incorrect. Mars has two moons called Phobos and Deimos, while Venus does not have any moons.
- Option 3 states that Mars and Mercury do not have satellites, which is also incorrect. Mars has two moons, and while Mercury does not have any moons, it is incorrect to say that neither have satellites.
- Option 4 states that Neptune and Pluto do not have satellites, which is incorrect. Both Neptune and Pluto have multiple moons orbiting around them.
Therefore, option 2 is the correct choice as it accurately identifies the planets that do not have satellites revolving around them, i.e., Mercury and Venus.