Statement: 1 Mark
Explanation: 1 Mark
Use of decantation: 1 Mark
No, we cannot remove the ink from the water through decantation, since the mixture of ink and water forms a solution.
In the solutions, the particles are evenly mixed around, and will not form sediments. 
Decantation can be used for a mixture of two liquids which are not soluble into each other and forms distinct layers or it can be used to separate the components of a  solid-liquid mixture in which the solid particles settles at the bottom and the clear liquid above it can be poured into another container.