Which of these excerpts from "the two offers" is an example of narrative ellipsis?
a."she tried to hide her agony from the public gaze, to smile when her heart was almost breaking."
b."she turned in her deep anguish to the father of her child, the loved and cherished dead."
c."at the time when this conversation took place, the deep trials of her life had passed away."
d."but before i proceed with my story, let me give you a slight history of the speakers."

C."At the time when this conversation took place, the deep trials of her life had passed away."

Explanation:

Remeber that a narrative elipsis refers to a literary device used by writers to omit parts of a sentence or an event. The reader has to fill those narrative gaps with their imagination. By doing this, the author can save time and advance on the story; usually the events omitted can be inferred by the audience. In this case, the writer omits the conversation as the important thing is how it affected the character, not it's content itself.  

in our power to make a world happy - to teach mankind the art of being so - to a character hitherto unknown - and to have, as it were, a new creation intrusted to our hands, are honors that command reflection, and can neither be too highly estimated,

i cannot see any of the statement