Final answer:
Venus does not have seasons because its rotation axis is not tilted like Earth and Mars. So, the correct answer is option b.
Step-by-step explanation:
Venus does not have seasons like Mars and Earth because its rotation axis is not tilted. The tilt of Earth's and Mars' rotation axes is what causes the changing seasons on these planets. When a planet's rotation axis is tilted, sometimes one hemisphere and sometimes the other 'leans into' the Sun as the planet revolves around it.
This results in different amounts of sunlight reaching each hemisphere, causing seasonal changes. Since Venus has a retrograde rotation period and its rotation axis is not tilted, it does not experience significant seasonal variations. So, the correct answer is option b.