A. fixed volume, definite shape
B. fixed volume, takes the shape of its container
C. completely fills its container, definite shape
D. completely fills its container, takes the shape of its container
The molecules of a liquid are not as compact as that of the solids. Though it has a fixed volume, the shape it takes is dependent on the container. Thus, the answer to this question is letter "B. fixed volume, takes the shape of its container".