Final answer:
Madeline's appearance before the coffin was sealed is described as peaceful and serene, featuring a faint blush and a lingering smile on her face.A) Peaceful and serene.
Step-by-step explanation:
The question refers to the physical appearance of Madeline before the closing of her coffin in a literary work.
Madeline's appearance is described as having a faint blush on her bosom and face, along with a suspiciously lingering smile on her lips, which are details typically associated with a cataleptic condition.
This specific description aligns with the notion of someone who appears peaceful and serene rather than displaying any signs of agony or horror.