Question

scientists have just discovered a new planet, tentatively named ck-52816, that spins in the opposite direction than it orbits the sun. based on this information, what do we know about this planet?
it must have a carbon - based atmosphere
it is at least 20 au from the sun.
it can be considered an ice giant.
it has retrograde rotation

Explanation:

Retrograde rotation is defined as a celestial body spinning in the opposite direction to its orbital motion around a central star. The problem states the planet spins opposite to its orbit, which directly matches this definition. Other options lack supporting evidence from the given information.

Answer:

It has retrograde rotation