Step 1: Name the syndrome.
In conversion disorder, psychological stress manifests as neurological-like deficits (e.g., aphonia—loss of voice; mutism—loss of speech) without adequate organic cause.
Step 2: Distinguish from look-alikes.
Paranoia concerns delusions; “compulsion” refers to repetitive acts, not loss of speech. Thus the symptom pair is characteristic of conversion presentations.
Step 3: Conclude.
\[
\boxed{\text{Conversion hysteria (Option C).}}
\]