According to kinetic molecular model, in gases

A.
The molecule are very fast apart & occupy all the space made available
B.
The particles occur in clusters with molecules slightly farther apart
C.
The particles vibrate about fixed positions and are held together by the strong intermolecular bond between them
D.
The particles are closely packed together, they occupy minimum space & are usually arranged in a regular pattern

In kinetic molecular model, gases are energized and thus moves freely, fast as they occupy specific space

There is an explanation video available below.

The writer emphasizes that in less developed countries,