I would say your answer is "<span>a thought-provoking walk at night".
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the very last one is the correct
If the grammatical structure that is italicized is <em>although her personality had not changed at all, </em>then the correct answer is adverb clause. Adverb clauses function the same way simple adverbs do - they answer the questions such as why, where, when, how, etc.
Working in a fast production line requires not only physical strength and quick reflexes but presence of mind. In instances when the operating machine jams, you need to decide quickly to either temporarily pause the production and call an expert to fix the machine to avoid further delays or fix the machine by yourself. The first option is the more sensible one.
