Which is the best summary of the last paragraph of "The Oblong Box"?

I don't have the story text here, but given the paragraph summary you provided, it sounds inaccurate or confused. The last paragraph of "The Oblong Box" (by Edgar Allan Poe) reveals that Wyatt's ostentatious, talkative wife had died and that the oblong box contained her corpse; Wyatt's behavior and the funeral secrecy are explained by grief and respect, not by gossip about her being uneducated. A correct brief summary would be:

Wyatt, though outwardly cheerful and apparently married to a vulgar, talkative woman, secretly mourns her death — the oblong box holds her corpse — and his strange conduct is driven by grief, not vanity or mercenary motives.

If you need a multiple-choice option picked, paste the choices and I will select the best one.