This is a complex sentence. It cannot be a compound sentence because it has no comma. It is to long(complex) to be a simple sentence.
<span>B. nonrestrictive clause
Since it is nonrestrictive, it is not necessary and is set off by commas.
Hope this helps :)</span>
Transferring would be the correct answer.
Answer:
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C) As a solution, the summer she was 16, she attended a rigorous eight-week circus camp.