I would say that the adverbial phrase is: D. Without a care.
The right answer for the question that is being asked and shown above is that: "C. The main purpose is to explain a natural disaster."
These are the following choices:
<span>A.
The main purpose is to tell a good story.
B.
The main purpose is to explain creation of humankind.
C.
The main purpose is to explain a natural disaster.
D.
The main purpose is to teach a lesson.</span>
