Question

A rock is 7 feet below the surface of a river. If its position can be recorded as -7, what would the position of 0 represent?

A. On the surface of the river
B. At the bottom of the river
C. 7 feet above the surface of the river
D. 7 feet below the surface of the river

Answer 1

A. On the surface because the paragraph says that the rock is 7 feet below the surface, so we can infer that the surface of the river would be 0.