Why is a rubber band considered as a solid? 

The molecules in solids are thought of as being closely bound together compounds. The solid's volume and form are both fixed. The flexibility of rubber bands is a characteristic.

Depending on its states and physical characteristics, the matter may be divided into three primary types.
Solids' characteristics are displayed below.
(1) The particles are securely bound and organised in a close-packed form in solids.
(2) The volume and form of solid compounds are constant.
(3) Because of the solid's stiff structure, its particles can only vibrate and cannot move.

Liquids: The following list of liquid qualities is provided.
(1) Compared to a solid state, the particles are less closely packed in a liquid state.
(2) Depending on the container in which they are placed, liquids might alter their form.
(3) Although liquids don't have defined shapes, they do have set volumes.
The characteristics of gases are displayed below.
(1) Particles in gases are separated from one another.
(2) Because there is no force of attraction, the gas particles can flow freely.
(3) Neither the form nor the volume of the gases are set.

Rubber bands are regarded as solid objects because they change shape and lengthen when force is applied to them, but return to their previous shape when the force is released. Rubber has an attribute called elasticity.

Therefore, the correct option is A.