Imagine a washtub about half full of water. a toy boat containing a rock floats in the water. imagine that you lift the rock out of the toy boat and set it aside (not in the tub). would the water level in the tub become higher or lower or would it remain the same as it was when the rock was in the boat? a. it would become higher. b. it would become lower. c. it would remain the same. d. it could either become higher or remain the same depending on the density of the rock