Answer:
solid
Explanation:
First let's look at the difference between the states of matter
Most solids maintain their shape regardless of where they are contained
Liquids and gases take the form of the container that contains them
In addition the gases expand their volume and tend to occupy the entire surface where they are contained
For example, if we have a certain volume of water in a square container, the water will have this shape
If we take the same volume and place it in a spherical container it will stop being square and will adapt to the spherical shape
At the beginning it is placed in a square box and they tell us that it maintains its spherical shape then it is contained in a spherical container and maintains its shape and volume
It maintains its shape and volume regardless of the container that contains it, therefore it is in a solid state