Question

Which postulate of the kinetic-molecular theory applies to the particles of a liquid?
They do not move freely but vibrate in a stationary position.
They can be compressed, which causes a large change in volume.
They have so much kinetic energy that their intermolecular forces are negligible.
They have enough kinetic energy to easily slide by each other.

Answer 1

"They have enough kinetic energy to easily slide by each other."

Explanation: In liquids particles are close together (like solids) but have enough kinetic energy to move/slide past one another, allowing flow while intermolecular forces remain significant.