All are the same. It equals to the same thing.
There are 5 steps:
1- measure the mass of the container
2- measure the volume of the liquid
3- measure the combined mass of the liquid and the container.
4-determine the mass of the liquid alone
5-divide the mass by the volume.
D is the answer. You cannot say that anyone is good at anything because it doesn't say that. And they were surveying the class of 2010
