A. pulling on a string.
B. pulling banks into a hole filled with liquid.
C. pushing banks into a hole filled with liquid.
D. pushing on a string.
answer:
D. pushing on a string.
A. pulling on a string.
B. pulling banks into a hole filled with liquid.
C. pushing banks into a hole filled with liquid.
D. pushing on a string.
answer:
D. pushing on a string.