It can reasonably be inferred that the narrator decides to loosen the
skysail because

All of the following are examples of service-learning opportunities except: a. donating time to senior citizen war veterans and writing a report about the experience for your u. s. history class. b. getting a part-time job at a habitat restoration center. c. reading to second-grade students as part of your assigned reading time for your english class. d. planting trees in your community and then discussing global warming in your science class.

The authors use the word “backbone” in lines 3 and 39 to indicate that

He did chinese culture change during the warring states period