Ain the color b at the top of the cup c at the bottom of the cup d there is no concentration gradient

Definitely B, the lowest concentration of dye resides in the top of the cup:)

c is the correct answer hope this !

phaneritic textures in which phaner means visible so phaneritic textures are standard of impertinent volcanic rocks. these rocks crystallized gradually under the surface of earth. when the magma cools deliberately then the ores have chance to develop and produce long crystals.