Concept:
Axial muscles are muscles located in the head, neck, and trunk region of the body. These muscles are involved in posture, movement of the head and neck, facial expressions, speech, and other forms of communication.
They play an important role in both verbal communication (speech) and non-verbal communication (facial expressions and gestures).
Step 1: Understand the role of muscles in communication.
Muscles responsible for facial expression, head movement, and speech contribute to communication.
Step 2: Identify the correct muscle group.
The muscles mainly associated with verbal and non-verbal communication are:
\[
\text{Axial muscles}
\]
Hence, the correct answer is:
\[
\boxed{(C)\ \text{Axial muscle}}
\]