Answer:
The answer to this would be 3
The correct answer is letter C: a complete subject.
The correct explanation would be that it is formed by the simple subject (the vertical farm) and a modifier which describes the simple subject (dubbed "The Dragonfly").
In order to identify a complete subject, you have to ask yourself who or what do the action: What is a remarkable building?
The answer is: The vertical farm dubbed "The Dragonfly" (complete subject)
It symbolizes people spending money on stuff online, making companies grow and gain more money, People become addicted to shopping online and wasting money. They are supporting companies.