Answer:
At first, I thought the locals where just trying to relate to tourist because they knew we really liked destiny.
Explanation:
I'm pretty sure it's a spelling change in the word since when you add a suffix to a word the original word is no longer the same.
An adverb phrase can modify a verb, an adjective, another adverb, or even an entire sentence or main clause.
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So therefore D) is your adverb phrase