Which is a complex sentence?

they will not defeat their enemy until they come up with a better strategy.

the castle is a fortress, but it does have some weaknesses.

with its calm surface, the moat looked harmless, but it had hidden dangers.

watchful archers hid in the towers, and the soldiers stood ready below.

Which of these details is not relevant to the paragraph? jane addams was born in cedarville, illinois, in 1860. as the daughter of well-off mill owner, jane always had her needs cared for. while she traveled through england in her late twenties, she and her friend, ellen g. starr, traveled to a house where poor people could sleep, eat, and learn. inspired by this, jane and ellen started a similar establishment, called hull house, in chicago, illinois. people living in the city could get a meal, learn, and rest at hull house. the founders soon became famous for their work, and their efforts many poor people in chicago. for her work, jane was awarded the nobel peace prize in 1931.

Buckminster boy. she glared at him. "lizzie, i swear to you, as sure as i'm standing right here—that's a lie. every bit of it. every single bit." "my granddaddy said it was a lie, too." she leaned her head to one side and looked at him steadily. "so why haven't you been down to the island? " "so only you get to ask questions now? " "yes." she waited. "i haven't been down to the island because my father believes that you were using me to you stay on malaga island." "well," she said slowly. "well." "i didn't believe it, either." the sea breeze lay at their feet panting, hoping they would play with it again. based on what turner and lizzie say, which is the best conclusion that can be drawn? they are angered by the lies the adults have been spreading. neither of them is able to fully trust what the other is claiming. each trusts the other and cares a great deal about their friendship. both are worried about the troubles their friendship may bring.

The significant structural shift that happens between chapters 21 and 22 is