C) exerted significant effort in overcoming challenges
Dorothy needs to assist in rescuing the scarecrow and woodman, right? She wouldn't reach out to the Witch of the North, nor the wizard of Oz or the winkies, leaving only one correct answer (the munchkins). She avoids calling the witch because she is evil, and the wizard is allied with the witch in the story; additionally, the winkies are distant during this setting -- I hope this answers your question:D
Answer:
It would be difficult to discover a European city with a reputation worse than that of Bartovia, which has been characterized by crime, litter, graffiti, and decay for the past 60 years.
With unemployment at 11%, a practically bankrupt city government, and a declining population as youth flee the area, there are few positive aspects for Bartovia's outlook.
Among the rare bright spots is a new initiative led by Sergio Leone, a nano-chemist who has come back to his hometown to attempt to realize what seems impossible.
11- days, night = compound subject
12- plays, sings = compound predicates
13- Mary and Bill = compound subjects //bought furnished = compound predicate
14- Chairs, tables, rugs = compound subjects //were chosen and furnished = compound predicate
15- begin and end = compound predicate
16_ John and Elaine = compound subject
a compound predicate must communicate at least two actions with the same subject
a compound subject consists of two or more subjects
I hope I didn't make any errors.