Which postulate of the kinetic-molecular theory applies to the particles of a liquid?

This question seems incomplete. I believe the answer choices are as followed:

Which postulate of the kinetic-molecular theory applies to the particles of a liquid?

O They do not move freely but vibrate in a stationary position.

O They can be compressed, which causes a large change in volume.

O They have so much kinetic energy that their intermolecular forces are negligible.

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

The answer to this question is They have enough kinetic energy to easily slide by each other. (4th option).

nacl or sodium chloride is an ionic compound. this is because an ionic compound pertains to a compound that consists of positively and negatively charged ions. in this case, na (sodium) has a tendency to lose one electron when it reacts with with other atoms, so the resulting sodium ion contains 11 protons and 10 electrons, thus making it positively charged (na+), when chlorine reacts, it usually gains one electron to form an ion called chloride, thus making it negatively charged ( since the ions are oppositely charged, they attract.