How do these three stories manage to reflect Alice LaPlante’s four characteristics of a good opening (described on pgs. 467-468)?

How do these three stories manage to reflect Alice LaPlante’s four characteristics of a good opening (described on pgs. 467-468)? Which strategy of effective openings (pgs. 468-474: Unalancing Acts, Starting in the Middle, Beginning with Action, On the Nature of Suspense) do these three authors seem to use?