Answer :
It has to be the surface of the water, stone was 8ft above the surface.
depth is height of ground to surface.
level it fell was 8 ft
if level it was thrown was 0 then the surface would be -8ft
C is the right answer
depth is height of ground to surface.
level it fell was 8 ft
if level it was thrown was 0 then the surface would be -8ft
C is the right answer
I believe it would be "the surface of the water in the pond" I hope that helps.