The minimum quantity of energy that the reacting species must possess in order to undergo a specified reaction.
I would say C. Permable
Google def.(of a material or membrane) allowing liquids or gases to pass through it.
"a frog's skin is permeable to water
Porous- (of a rock or other material) having minute spaces or holes through which liquid or air may pass
The type of charge an electron carries is B negative
I think you mean alcohol ? if so there are a few basic types including ethanol
