Which of the following are common classifications of communication?

The common classifications of communication here are statements 3, 4 and 5.

Statement 3, kinesics, covers body signals like gestures, posture, facial expression and eye contact.

Statement 4, vocalics, covers the vocal qualities of speech such as tone, pitch, pace and pauses.

Statement 5, haptics, covers what touch communicates, from a handshake to a reassuring pat.

Optics is the physics of light and is not a recognised branch of communication behaviour.

Epistemics concerns the theory of knowledge, so it too falls outside these non-verbal communication categories.