Answer:
C!
Step-by-step explanation:
Although "moreover" could be an intorductory phrase, it is not currently being used as one. "Moreover" is being used as a subordinating conjunction; they help establish that part of the sentence as more important than the other.
The correct answer would be C. "Because of the rise of petty crime" does not seem like an introductory phrase like for example, as a result, or on the other hand but it is being used as one.
Hope this helps!