Which sentence is punctuated correctly?

a.
"they really do! " exclaimed preston, shaking his head.

b. ned asked, "how do these work"?

c. zachary said, "they look like tiny castles now".

d. oscar replied. "these crystals grow when you put them in water."

Who said this in of pride & prejudice, and what type of irony does it show? “you mistake me, my dear. i have a high respect for your nerves. they are my old friends. i have heard you mention them with consideration these twenty years at least.” a.mrs. bennet: situational irony b.mr. bingley: dramatic irony c.elizabeth: proverbial irony d.mr. bennet: verbal irony