This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
For me it's letter B evaporation, because water can be evaporate and leaving behind the salt, filtration can't be worked because it's allowing only the liquid to pass through a porous material, mechanical seperation is only refers of a seperation methods using of tools to seperate a components of a mixture, decantation can't even work to seperate salt..