The underlined words in the passage are "as if it had no weight."
Answer: C) A dependent clause.
Explanation: an independent clause is a phrase that contains a subject and a predicate and that makes complete sense on its own. A dependent clause can also have a subject and a predicate, but it depends on the main clause to make sense. In the given excerpt the words "as if it had no weight" is an example of a dependent clause (the independent clause would be: "she could raise the other leg slowly back and forth with ease").
