Answer:
ALL: it can all be used in the Separation of molecules by size.
ION-EXCHANGE CHROMATOGRAPHY, AFFINITY CHROMATOGRAPHY: are the type if chromatography used to Separate molecules by charge.
ALL: each given separation technique as its stationary phase notably possessing a covalently bound group where a protein in its mobile phase can adhere to.
ALL: it all employs a mobile phase and a stationary phase to distinguish between proteins.
SIZE-EXCLUSION CHROMATOGRAPHY: is stationary phase it's know to have cross-linked polymers which possess several pore sizes.
AFFINITY CHROMATOGRAPHY: this is used majorly to distinguish between molecules using their protein-ligand binding.
ION-EXCHANGE CHROMATOGRAPHY, AFFINITY CHROMATOGRAPHY: both are known to have a stationary phase that make use of a negatively or positively charged groups.