Plants soak up water by their roots and release it by transpiration.
I would think that the firearm should be passed over the fence and not carried in the hands if it is a rifle to avoid it accidentally going off and make sure that it is not loaded or with no shells in the chamber for safety because it could conceivably fire if the bearer fell while crossing the fence.
The answer to your question is A
Assimilatory powers means the capable of taking (gas, light, or liquids) into a solution and having the power or capacity or tendency to absorb or soak up something.
