Concept:The correct filler must be the closest opposite of the underlined word, which suggests humility or meekness.
Explanation:Humility means being modest and free from pride.
Its direct opposite is haughtiness, meaning arrogance or excessive self-importance.
Stubbornness means refusing to change one's mind, so it does not oppose humility.
Gentleness means being kind and mild, which is not the opposite needed here.
Quietness refers to silence or calmness, not to pride or modesty.
Thus, the word that gives the clearest opposite meaning and correctly fills the gap is haughtiness.
Answer:A. haughtiness