The quality or state of being excessively sensitive or emotionally idealist is called sentimentality. (Option B)
Sentimentality means exaggerated and self-indulgent tenderness, sadness, or nostalgia. It is the expression of gentle emotions such as love, sympathy, or caring.
In terms of philosophy, sentimentalism is a view in meta-ethics according to which morality is somehow grounded in moral sentiments or emotions.