For singular words that end in s, ss, sh, ch, x, or z, what letters are added to make them plural?

Tori is writing a literary analysis of the novel little women. read the following claim statement she wrote about the story. in little women, louisa may alcott uses figurative language to readers understand the feelings and experiences of the central characters. which quote from the story can tori use as evidence to support her claim? a. “she knew it very well, for it was that beautiful old story of the best life ever lived, and jo felt that it was a true guidebook for any pilgrim going on a long journey.” b. “‘and so nice of annie moffat not to forget her promise. a whole fortnight of fun will be regularly splendid,’ replied jo, looking like a windmill as she folded skirts with her long arms.” c. “‘rather a pleasant year on the whole! ’ said meg, smiling at the fire, and congratulating herself on having treated mr. brooke with dignity.” d. “‘what are you thinking of, beth? ’ asked jo, when amy had her father and told about her ring.”