AT THAT TIME SCIENTISTS DISCOVERED THAT WHEN A SEQUENCE OF STILL PICTURES WERE SET IN MOTION, THEY COULDGIVE THE FEELING OF MOMENT

1/ - SACH BT ANH 10 CO DAP AN
SACH BT ANH 10 CO DAP AN

1/ At that time scientists discovered that when a sequence of still pictures were set in motion, they could

give the feeling of moment.

A. detected B. founded C. knew D. saw