A
A.He brands them with a hot iron, trims their manes, cuts their hoofs, and puts halters on their heads.
B
B.He ties up the horses with the halter on their heads and ropes on their legs, makes them stand up in a row in the stable.
C
C.He trains them to run as fast as possible on different lands such as streets, grasslands, deserts, and mountains.
D
D.He trains them to run together at the same pace by keeping before them the fear of snaffles and ropes, behind them the fear of whips.