The correct option is C Cornflakes in milk
Filtration is a process of separation used when minute insoluble solids are present in a liquid. In this process a filter paper is used, which is a sieve with very minute holes.
* Salt is soluble in water, sugar is soluble in milk and ink mixes completely with water. Hence, the components of these mixtures cannot be separated by filtration.
* Cornflakes are insoluble in milk and hence, can be easily separated by filtration.