Still need help if so answer is three i just took the same ia test
B is the correct answer. "Your sister" would be enough to have a complete meaning in the sentence, but "Louisa" was added to modify it as an appositive.
Answer:
hey were quick to arrive
but had already wasted time.
Tired and unsteady, the firefighters were not
prepared for the job. It took a while.
O A signal mistake cost time because "dozens of
firefighters were sent on a wild-goose chase"
(Murphy 33).
Explanation: