Asymmetry is the lack of symmetry.
A testable question is B. If a plant is turned upside down, which way will the roots grow?
The other options are incorrect because you cannot create some kind of experiment to prove them right or wrong.
Hope that helped you.
Answer:
B) snow
due to the below freezing temperatures of the upper atmosphere then the slightly above freezing temperatures of the surface it would cause it to the rain to turn into snow
True... is this the question or...