A substance seems to completely fill

a container, but more can best forced in. The substance is a__________.
A. solid
B. gas
C. liquid
D. none of these

a and b

f

To determine the answer, we need to consider the properties of each of the given options - solid, gas, and liquid.

A solid usually has a fixed shape and occupies a specific volume. It is typically unable to be compressed to occupy a smaller volume.

A gas, however, has no fixed shape or volume. It can expand to fill any container it is placed in. Gases can also be easily compressed, allowing for more gas particles to be forced into a container.

A liquid, like a gas, also has no fixed shape but does have a fixed volume. Though it can take the shape of its container, it cannot be easily compressed like gases.

Based on the given description that more of the substance can be forced into the container, we can conclude that the substance is a gas (option B).