A. Dumbness
B. Changeableness
C. Hesitation
D. Reserve
✅ The correct answer is option D.
Dumbness : lacking intelligence or good judgment; stupid.
Dumbness : lacking intelligence or good judgment; stupid.
Changeableness : the quality of being changeable.
Hesitation : the action of pausing before saying or doing something.
Reserve : a lack of warmth or openness in manner or expression.
Taciturnity : reserved, not loud and talkative.
Synonym of Taciturnity is Reserve