Which Color Grid Completes the Pattern?

Official explanation

The answer is A. The pattern becomes clearer when we track three groups of colors: * Blue, cyan, green * Yellow, magenta, red * Black, gray, white Each group moves between rows within the small grids, while its internal color order follows a repeating cycle. Following the two existing grids in the bottom row of the main puzzle gives: Color group Left grid Middle grid Required in the missing grid Blue–cyan–green Cyan → Green → Blue Green → Blue → Cyan Blue → Cyan → Green Yellow–magenta–red Red → Yellow → Magenta Magenta → Red → Yellow Yellow → Magenta → Red Black–gray–white White → Black → Gray Gray → White → Black Black → Gray → White The groups’ changing row positions place the blue group at the top, the yellow group in the middle, and the black group at the bottom. The missing grid must therefore be: Blue Cyan Green Yellow Magenta Red Black Gray White This matches option A. The same cycles can also be checked by following the rightmost column downward.